chemical thermodynamics homework help

Boost your journey with 24/7 access to skilled experts, offering unmatched chemical thermodynamics homework help

Trusted by 1.1 M+ Happy Students

4.4Trust Pilot

4.4Edu Reviewer

5App Review

4.8Student

WhatsApp Support

Get Instant
Online Homework Help
via WhatsApp

Get instant homework help from top tutors—just a WhatsApp message away. 24/7 hw help support for all your academic needs!

★★★★★

2M+ students trust TutorBin

Your WhatsApp Number

⚡ Instant reply

🔒 100% private

👨‍🏫 Top tutors

🌍 All subjects

^*Get instant homework help from top tutors—just a WhatsApp message away. 24/7 support for all your academic needs!

2M+ Students Helped24/7 Live SupportExpert TutorsAll Subjects CoveredInstant Response100% ConfidentialTop Rated ServiceMoney-back Guarantee2M+ Students Helped24/7 Live SupportExpert TutorsAll Subjects CoveredInstant Response100% ConfidentialTop Rated ServiceMoney-back Guarantee

Recently Asked chemical thermodynamics Questions

Expert help when you need it

Q1:7. (Denbigh, ch. 9) Consider a two-component "regular solution:" RT log 71 = b(p)x2, RT log 72 = b(p)x2, (a) Verify that the activity coefficients satisfy the Gibbs-Duhem equation. (b) Show that Asmix is the same as for an ideal solution, and show that Ahmix = b(p)x1x2, unlike an ideal solution which has Ahmix = 0. b/RT=4 ₡1 Apmix 02 0.4 0.6 0.8 O RT b/RT=2 0.5 b/RT=0 -1.0- b/RT =- 2 02 0.4 0.6 0.8 -0.05- locally unstable b/RT=2.5 Aplmix RT globally unstable -0.15 -0.20 b/RT=2 -0.25 -0.30- b/RT=1.5 Figure 2: Molar Gibb's free energy of mixing versus composition for different values of B = b/RT. Wide range of B = b/RT (top graph); narrower range of B = b/RT closer to stability transition (bottom graph). -0.10 T2 500 480 460 440 T 420 400 Tı 380 360 0.0 0.2 0.4 0.6 0.8 1.0 21 Figure 3: Binary phase diagram showing miscible liquid phase and immiscible solid phase. (c) Calculate the molar Gibbs free energy of mixing Aftmix. A graph Aftmix is provided in figure 2. Show that the boundary of the two-phase region for T, P fixed is 2Bx1(1-21)=1, where B = b/RT. Note that a single phase exists for 2Bx1(1 - 21) < 1; two phases coexist for 2Bx1(1 -21) > 1. 8. (Denbigh ch. 9) Consider a binary mixture that has an azeotrope. Show that T is an extremum (minimum or maximum) under constant pressure conditions and P is an extremum under constant temperature conditions at the azeotrope 21 = y1 (equal vapor and liquid phase compositions). 9. (Denbigh ch. 9) Consider two metals that form an ideal solution (i.e. are completely miscible) in the liquid phase but are completely immiscible in the solid phase, as shown in figure 3. The melting points of the pure phases are T1 and T2; the heats of fusion, Ah1 and Ah2, are constant. (a) Prove that this system forms a minimum melting temperature eutectic point as seen in Figure 2. To do this, show that the slope dT/dx of the solid-liquid phase boundary is negative for small x and and the slope of the phase boundary is positive for large x. (b) For the special case Ah1 = Ah2 = Ah and T1 = T2 =To, show that the eutectic composition and temperature are given by x = 1 2' T = Ah + RTo log 2 AhToSee Answer
Q2: MECH 1215 LABORATORY THREE (WEEK 16) ADIABATIC COMPRESSION LAB OBJECTIVE 1. On completion of the laboratory the students will have familiarised themselves with polytropic processes, in particular adiabatic and isothermal compressions, and how to experimentally determine the polytropic index from Equation 1. PV = C₁ Thermodynamics lab 2 Where P is the pressure, V is the volume, n is a constant (the polytropic index) that defines the behaviour of the compression process and c, is some constant. 2. STRUCTURE Students will work in groups of 3 or 4, depending on laboratory group size on the day, and each group will carry out up to three (3) repeat experiments for both (1) adiabatic and (2) isothermal compression experiments. However, each student will use the data generated individually. [1] Note 1: You are expected to run each experiments multiple times (a minimum of 3 repeats of each of isothermal and adiabatic compression experiments is required. More is better). Isothermal compression Adiabatic compression (or as close to this as possible) In particular the students will be required to find the value of n for air under conditions of MECH1215: Thermofluids 1 You are expected to find these values within the 2 hour lab session, using a combination of experimentation, mathematical manipulation of equations and data-processing with either excel or MatLab. Once you have found values for n, there is a supplemental question to answer. Details in the sections detailing the tasks to be be undertaken in as part of this lab processes. Laboratory 3 Page 1 of 10 MECH 1215 Introducing ReLOAD Protocol ReLOAD Protocol has been been introduced to the lab this year. This will be used in generation and collation of experimental data. There is also an opportunity for you to use the ReLOAD user interface to evaluate the correctness of your data, particularly you estimated values of polytropic index “n”. Details of the implementation of the ReLOAD protocol is provided in the section on Experiment methodology. 3. DELIVERABLES Thermodynamics lab 2 Each student is required to submit one lab report covering the experiment which should be concise and accurate. Maximum length: 10 pages (excluding cover and reference pages) Important note - Each report should have: Introduction: Putting the work into context and describing the background theory. The introduction should start with some background to the experiment, applications in the real world and relevance of the experiments you are about to undertake. Introduce the appropriate equations and explain the assumptions behind them, their limitations and again relate this to real systems. Aim/Objectives: Explain what your hope to achieve from the lab practical. All aims and objectives should be mentioned. Apparatus A list of the apparatus used and a diagram of the experimental system, with proper labels showing each part/component with a brief description of the function of each (Hand drawing diagrams should be avoided). Methodology: Providing enough information to enable someone to repeat the measurements themselves to the same degree of accuracy. It should have the settings used on any equipment and what controls were in place such as room temperature, placement of equipment, data processing, etc. MECH1215: Thermofluids 1 Laboratory 3 Page 2 of 10 MECH 1215 Results: Conclusions: In a concise form for each task, with the important data clearly highlighted, with no room for interpretation, example calculations provided and all questions within that task answered. Any post- processing of data, curve fitting, figures/plots should be presented and fully described. A description of your data analysis procedure (including any mathematical derivations). Must include graphs and fitted expressions to give n and work for the different scenarios. The results must show repeatability with error bars use to demonstrate this. This will mean that a minimum of two (3) repeats of test is carried out with all measurements recorded. Discussion: Containing an analysis and interpretation of the results based on the information collected and explaining its significance. Identify important issues, discuss the accuracy of the results and explain your findings. Compare your results with theoretical values and standard values from literature (i.e. lecture notes, books, scientific papers). Concise list of the conclusions arising from each experiment. No new information should be contained within this section. References Citations to appropriate literature must be included. Thermodynamics lab 2 Please follow Library referencing guidelines for references and citations: https://library.leeds.ac.uk/info/1402/referencing. The School of Mechanical Engineering follows Leeds Harvard or Leeds Numeric. Select one of these styles and be consistent throughout the report. Formatting exactly as per the guidelines. Please note: Experiments can be done as a group to generate data. The laboratory support staff on ground will guide you on the exact format for this. So please follow their lead. Data processing and report writing MUST be done individually. You are advised to bring your own laptop. This is to allow you start processing your data individually once you have generated your data. You can then be able to ask for further guidance from the support staff around. MECH1215: Thermofluids 1 Laboratory 3 Page 3 of 10 MECH 1215 ● When reporting data, please ensure you use the correct number of decimal places, ensure consistent number of decimal places, and add appropriate labels and units in every plot. All graphs, diagrams and images should be labelled as Figure followed by a number and caption. Do not use Picture 1 for example. Tables should be labelled as Table 1 etc. (It is not necessary to include a graph title when an appropriate figure caption is used and placed underneath the graph). Thermodynamics lab 2 Each section listed in the lab handout must have its own section header and be clearly distinguished from the other sections. Please order the report as per the lab handout. Marks will be awarded for presentation of figures, equations and tables. A Laboratory report should be written in 3rd person, mainly in the present tense. Past tense should only be used when describing the work carried out and the results obtained. Format the document appropriately. Do not provide a report where each task is answered one after another throughout the document. The report should be submitted electronically as per the instructions on Minerva. Standard University penalties will be applied to work handed in after the deadline without mitigating circumstances. MECH1215: Thermofluids 1 Laboratory 3 Page 4 of 10 MECH 1215 Experiment Methodology Adiabatic Gas Law Apparatus You will be provided the apparatus showed bellow. It consists of a piston within a cylinder and mechanical parts to allow a rapid compression, together with the following instrumentation: A pressure probe A temperature probe A position gauge The output signals are fed into a data logger connected to a computer. Arduino software is used to run a suitable programme to acquire the data. ReLOAD is used to provide an interactive platform for running the experiments and collation of generated data. ReLOAD Protocol Thermodynamics lab 2 Note that these task are here to help you work through the laboratory session. The tasks should not form the basis of the structure of the laboratory report i.e. DO NOT write a report which is itemised task 1, task 2 etc. with responses to each individual task. Instead incorporate the work appropriately into the methodology, results and discussion section where suitable. Each of the adaibaitic compression apparatus is assigned a unique number (1 – 8) on ReLOAD. Student MUST check that the number on the compression apparatus to identify the same number on ReLOAD. MECH1215: Thermofluids 1 All students should now have a loggin to ReLOAD from using ReLOAD as part of MECH1010. Laboratory 3 Page 5 of 10See Answer
Q3:Problem 1: Normal-butane is stored in a steel tank and the temperature of the tank and butane inside is kept at a constant temperature T = 85°F Use these parameters for your calculation. Acentric factor w = 0.193, critical temperature Tc = 305.62°F, critical pressure pc = 550.6 psia, Vc = 4.1 ft³/lbmol. a) Use Lee-Kesler's correlation to calculate the n-butane vapor pressure inside the canister. (5 points) b) Write down the van der Waals EOS and calculate the constants a, b using the critical properties given above. Use n = 1 pound-mole, or Ibmol. (5 points) c) Calculate the critical volumes Vc, ft³/lbmol, from VDW EOS. Compared the calculated Vc and the given value. (5 points) d) Plot pressure p vs. volume V for one Ibmol of butane gas. Use Vmin = b + 0.2, V₁ = 1.02Vmin, V₂ = 1.02V₁, V3 = 1.02V₂, ... until Vmax > 150 ft³. (10 points) a) Using VDW EOS b) Using the Ideal Gas EOS e) Use the calculated vapor pressure, and p vs. V plot to estimate the system volumes at the dew point and bubble point, respectively. (5 points)See Answer
Q4:Lecture 16: Equilibrium of Multiple Condensable Vapors Problem 6: A tank is filled with propane C₂H₂, the first component, and n-hexane CH₁4, the second component. For a constant temperature, there exist both liquid and vapor phases inside the tank, and the liquid and vapor are in equilibrium. The measured vapor composition is y₁ = 0.925008, y₂ = 0.074992, liquid composition x₁ = 0.243423, x₂ = 0.756577. The total mass inside the container is 5 moles, and the 3.851377 moles are in the liquid phase. 1. Calculate the equilibrium constants K₁, K₂ (3 points) 2. Calculate the moles of propane and n-hexane in the vapor phase, 1v1.1v2 (3 points) 3. Calculate the moles of propane and n-hexane in the liquid phase, 1₁, 12 (3 points) 4. Next, the system temperature is raised above the critical temperature of n-hexane, and both compounds exist as vapor only. Calculate the composition inside the container. (3 points) Propane + n-Hexane Vapors Propane + n-Hexane LiquidsSee Answer
Q5: CHE 120 Homework Assignment Week 8 Lecture 15: Equilibrium of Condensable Vapor and Noncondensable Gas Problem 1: Textbook 8.3.5. (5 points) *8.3.5. Calculate the vapor pressure of each compound listed below at the designated temperature using the Antoine equation and the coefficients in Appendix H. Compare your results with the corresponding values of the vapor pressures obtained from the Antoine equation found in the physical properties package on the CD accompanying this book. a. Acetone at 0°C b. Benzene at 80°F c. Carbon tetrachloride at 300 K CHE 120-Spring 2024-Chang 1 Chemical Engineering Physical Properties Heat Capacities Enthalpies Density of Liquid Vapor Pressure Steam Tables Compounds Miscellaneous AMMONIA ACETONE A-D E-H 1-EICOSANETHIOL AR BR2 CL2 CS2 F2 H2 H20 I-L 1-IODOPROPANE M-Q 1,2-PENTADIENE R-X 1,1,1-TRIFLUOROETHANE Formula CCL4 CCL3F CCL2F2 CCLF3 Acetone at O C CF4 CO CO2 Fomula Vapor Pressure (mmHg) (Tis in ℃) t Max logop*= 7.2316 OK Min Ⓒby David Himmelblau 2000. All rights reserved. ACETONE C3H60 Temperature 0 -32 CHE 120-Spring 2024-Chang p* (mmHg) 1277.03 [T+ 237.23 } 77 ℃ CCF CK 70.552 2 Chemical Engineering Physical Properties Heat Capacities Enthalpies Density of Liquid Vapor Pressure Steam Tables Compounds Miscellaneous AMMONIA BENZENE A-D E-H 1-EICOSANETHIOL AR BR2 CL2 CS2 F2 H2 H20 I-L 1-IODOPROPANE M-Q 1,2-PENTADIENE R-X 1,1,1-TRIFLUOROETHANE Formula CCL4 CCL3F CCL2F2 CCLF3 Benzene at 80 F CF4 CO CO2 Fomula Vapor Pressure (mmHg) (Tis in ℃) t Max logop*= 6.90565 OK Min Ⓒby David Himmelblau 2000. All rights reserved. BENZENE C6H6 Temperature 80 -16 CHE 120-Spring 2024-Chang p* (mmHg) 1211.033 (T+ 220.79 } 104 ℃ CC OF CK 102.738 3 Chemical Engineering Physical Properties Heat Capacities Enthalpies Density of Liquid Vapor Pressure Steam Tables Compounds Miscellaneous AMMONIA A-D CARBON-TETRACHLORIDE E-H 1-EICOSANETHIOL I-L 1-IODOPROPANE AR BR2 CL2 CS2 F2 H2 H20 M-Q 1,2-PENTADIENE R-X 1,1,1-TRIFLUOROETHANE Formula CCL4 CCL3F CCL2F2 CCLF3 Carbon-Tetrachloride at 300 K CF4 CO CO2 Fomula Vapor Pressure (mmHg) (Tis in ℃) t Max OK CARBON-TETRACHLORIDE Min logop*= 6.8941 Ⓒby David Himmelblau 2000. All rights reserved. CCL4 Temperature 300 -20 CHE 120-Spring 2024-Chang 1219.58 p* (mmHg) 101 (T+227.17 CC CF K 123.875 t ] 4See Answer
Q6: Exercises chapter 001. Volume / specific volume 1.1 Plotting Vapour Pressure So that you get used to the different properties, we are going to spend some time plotting them and commenting on them. (a) You are to begin by plotting the vapour pressure of water against temperature. You need the first steam table for this. (b) You already know that ‘water boils at 100 °C'. Does this graph agree with your experience? 2.0 р MPa 1.5 Sol.: In class. 1.0 0.5 T 0.0 0 100 200 °C university of groningen CHTT-09. Technische thermodynamica / 1 1.2 Volume versus Pressure Your second assignment: find all the data that you can on the volume of both steam and water at a temperature of 200 °C. You will need data on 'saturated' steam and water, on 'superheated' steam and on compressed water. Plot these data in the logarithmic graph below and answer the following questions: (a) You will find that the vapour volume decreases with increasing pressure. The slope of the line is -1; what does this mean? Remember that we are plotting the logarithm of volume against the logarithm of pressure. (b) What can you say about the effect of pressure on liquid volume? (c) The line of the gas volumes has an abrupt step connection to the line of liquid volumes. At which pressure does this occur? Sol. In class. 10 m³ kg 1 0.1 T=200°C 0.01 р MPa 0.001 0.01 0.1 1 10 university of groningen CHTT-09. Technische thermodynamica / 2 1.3 Volume versus Temperature (1) Plot the volumes of liquid against temperature in the upper diagram. The pressure is 5 MPa. What do you see for temperatures up to 100 °C? (2) Plot the volume of the gas against temperature in the lower diagram. The pressure is 0.1 MPa What does the slope in the graph for the gas indicate? liquid at p=5MPa 0.001 0 m³ kg¹ T °C 0.000 0 100 Sol.: In class. 10 vapour at p=0.1MPa D 3 m² kg‍ T K 1 100 1000 university of groningen CHTT-09. Technische thermodynamica / 3 1.4 Volume near the Critical Point Your last plotting exercise. Do note that both scales in this logarithmic diagram have been shifted by a factor of ten compared with that in exercise 1.2. You are to plot the following: the critical point volume of the saturated vapour and of the saturated liquid volume of the (superheated) vapour at 300 °C and at 400 °C volume of the (compressed) liquid at 300 °C. 1 U 3 m³ kg³¹ 0.1 0.01 0.001 Sol.: In class. р MPa 0.1 1 10 100 university of groningen CHTT-09. Technische thermodynamica / 4 1.5 Piping at Home A suitable velocity for a liquid in a pipe is 1 m s-¹. For gases higher velocities are applied, say 10 m s-¹. Using these values calculate the inner diameters of pipes required for the following purposes: (a) Filling the flushing tank of a toilet. This requires about 6 L in one minute. (b) For the forced ventilation of the house. This amounts to about one house volume per hour, say 360 m³ h-¹. Sol.: (a) 1.1 cm; (b) 11.3 cm. 1.6 Large Flows Flows in technical systems can be much larger than in the household. Two examples: (a) Suppose you need to drain an area of one square kilometre. The heaviest rainfall expected is 1 cm h-¹. Which diameter ‘sewage pipe' would you need if the velocity in the pipe is 1 m S-¹? (b) A gas-fired power station might burn 100 m³ s-¹ of natural gas. This requires about 1000 m³ s-¹ of ambient air for combustion. (We study this in more detail in Lesson 10). This air leaves the installation at a temperature of 450 K and ambient pressure (0.1 MPa). The velocity in the stack (chimney) is 15 m s¹. What is the required stack diameter. (You may find the result surprising.) Sol.: (a) 1.9 m; (b) 11.3 m 1.7 Gas Pipeline The main pipes of the National Gas Company have a diameter of 1.2 m. They are operated under a pressure of 8 MPa, with a gas velocity of 5 m s-¹. You may assume a pipe temperature of 290 K. How many moles of gas (methane CH4) are transported per second? The gas constant has a value of 8.314 J mol‍¹ K-¹. Sol.: 1.876× 104 mol/s. 1.8 Derivation of the simplified ideal gas law The simplified ideal gas law establishes that pV/T is constant for a closed system. You are asked to derive this expression from the general equation of state: ov dV = ᎧᎢ av dT + ӘР dP P Taking into account the following historical empirical laws: 1) Boyle-Marriotte: At constant temperature the product pV is constant; 2) Gay-Lussac: At constant pressure the ratio V/T is constant. Sol.: Challenge 1.9 Percentage of error using the ideal gas law What is the percentage of error involved in treating steam as an ideal gas at the following conditions? a) p 1 MPa, T = 400 °C; = b) p = 10 MPa, T = 400 °C. Sol.: a) 1.3 %. b) 17.8 %. university of groningen CHTT-09. Technische thermodynamica / 5See Answer
Q7:The following items must be included in the flowchart: 1. AE=q+w 2. Thermochemical stoichiometry 3. q=mCAT 4. qhot + q cold = 0 5. Bomb calorimetry: qcal = CcalAT 6. Standard enthalpy of formation 7. AH° En AH°(products)- Em AH°(reactants) = 8. Hess's LawSee Answer
Q8:Problem 1: Textbook 9.2.3 Calculate the following quantities using the definition of enthalpy. Assume the air is an ideal gas, the heat capacities c₁ = 21 J/gmol.K, cp=cy + R, where R is the gas constant. Use tank volume V = 10 m³. *9.2.3. A rigid tank contains air at 400 kPa and 600°C. As a result of heat transfer to the surroundings, the temperature and pressure inside the tank drop to 100°C and 200 kPa, respectively. Calculate the work done during this process. a) The total heat transfer AQ in joules (3 points) b) The work done to the system or surroundings AW (3 points) c) The internal energy change AU (3 points) d) The enthalpy change AH (3 points)See Answer
Q9:A sample of natural gas is 87.0% CH4 and 13.0 % C2H6 by mass. What is the heat from the combustion of 3.80 g of this mixture? Assume the products are CO2 (g) and H2O(l). ΔΗ Substance kJ J mol-¹) CH4(g) -74.81 C2H6 (g) -84.86 CO2(g) -393.5 O2(g) 0 H2O(l) -285.8 kj heat is evolved Submit Answer Retry Entire Group 5 more group attempts remainingSee Answer
Q10:A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter. In the laboratory a student burns a 0.611 g sample of para-benzoquinone (C6H4O2) in a bomb calorimeter containing 1160 g of water. The temperature increases from 25.40°C to 28.10°C. The heat capacity of water is 4.184 J/(g °C). The molar heat of combustion is -2747 kJ per mole of para-benzoquinone. C6H4O2 (s) + 602 (g) →6CO2(g) + 2H2O(l) + Energy Ignition wires Thermometer Stirrer heat sample Water Insulated Sample Burning Steel outside dish sample bomb chamber Previous Next>>/nIgnition wires heat Thermometer Stirrer sample Water Insulated Sample Burning Steel outside dish sample bomb chamber Combustion (bomb) calorimeter. Calculate the heat capacity of the calorimeter. Heat capacity = J/°CSee Answer
Q11:(6 points) 1. If oxygen is in excess, how much heat (q) will 100 grams of C8H18 produce when it is completely consumed? Use the information in the following equation to complete your calculations. 2C8H18 (1) +2502 (g) → 16CO2 (g) + 18H₂O (I), AH = -10,941 kJSee Answer
Q12:Answer the following: Two flash distillation columns are connected together as shown in the following diagram. Both are at 1 atm. The feed to the first drum is a binary mixture of methanol and water of 55 mol % MeOH. Feed flow rate is 10,000 kmol/h. The second flash column operates with = 0.7, and the liquid product composition is 25 mol % MeOH. Determine the fraction vaporized in the first column, and the values yl, y2, x1, II, and I2. Feed = 10,000 kmol/h Z = 0.55 Column 1 Column 2 L2, X₂ = 0.25/nGiven the vapor-liquid equilibrium data in the table below, Methanol vapor (mol%) 0 13.4 23 30.4 36.5 Methanol liquid (mol%) 0 2 4 6 8 10 15 20 30 40 50 60 70 80 90 95 100 41.8 51.7 57.9 66.5 72.9 77.9 82.5 87 91.5 95.8 97.9 100 Temperature (°C) 100 96.4 93.5 91.2 89.3 87.7 84.4 81.7 78 75.3 73.1 71.2 69.3 67.6 66 65 64.5 Answer the following: Two flash distillation columns are connected together as shown in the following diagram. Both are at 1 atm. The feed to the first drum is a binary mixture of methanol and water of 55 mol % MeOH. Feed flow rate is 10,000 kmol/h. The second flash column operates with = 0.7, and the liquid product composition is 25 mol % MeOH. Determine the fraction vaporized in the first column, and the values yl, y2, x1, T1, and T2.See Answer
Q13:Q3) Equilibrium Flash Calculations A liquid containing 60 mol % toluene and 40 mol% benzene is continuously distilled in a single equilibrium stage at 1 atm. What percent of benzene in the feed leaves as vapor if 90% of the toluene entering in the feed leaves as liquid? Assume a relative volatility of 2.3.See Answer
Q14:b. Suppose the condenser operates as a total condenser at °40 C, the production rate of overhead product is 75 kmol/h, and the mole ratio of reflux to overhead (distillate) product is 1.5:1. Calculate the molar flow rates and compositions of the reflux stream and the vapor feed to the condenser. c. Suppose now that a partial condenser is used, with the reflux and overhead product in equilibrium at 40 °C and the overhead (distillate) product flow rate and reflux-to-overhead product ratio having the values given in part (b). Calculate the operating pressure of the condenser and the compositions of the reflux and vapor feed to the condenser./nQ2) Phase Equilibria Pressure The vapor leaving the top of a distillation column (overhead) goes to a condenser in which either total or partial condensation takes place. If a total condenser is used, a portion of the condensate is returned to the top of the column as reflux and the remaining liquid is taken off as overhead product the (or distillate). If a partial condenser is used, the liquid condensate is returned as reflux and the uncondensed vapor is taken off as the overhead (or distillate) product. Vapor from top of column Reflux (liquid) PARTIAL CONDENSER Cooling fluid 5 Overhead product (vapor) REFLUX DRUM The overhead product from an -butane- pentane distillation column is 96 mole% butane. The temperature of the cooling fluid limits the condenser temperature to 40 C or higher. a. Using Raoult's law, estimate the minimum pressure at which the condenser can operate as a partial condenser (i.e., at which it can produce liquid for reflux) and the minimum pressure at which it can operate as a total condenser. In terms of dew point and bubble point, what do each of these pressures represent for the given temperature?See Answer
Q15:Examples: Example 3.1 For liquid acetone at 20°C and 1 bar, B= 1.487x10-3 oC-1 k-62 × 10-6 bar-1 V = 1.287 cm3 g -1 For acetone, find: a) The value of (dp/dt) at 20°C and 1 bar. b) The pressure generated by heating at constant V from 20°C and 1 bar to 30° C. c) AV for a change of state from (20°C, 1 bar) to (0°C, 10 bar.See Answer
Q16:2.27. Fifty (50) kmol per hour of air is compressed from P1 = 1.2 bar to P2 = 6.0 bar in a steady-flow compressor. Delivered mechanical power is 98.8 kW. Temperatures and velocities are: T1 = 300 K T2 = 520 K u1 = 10 m-s-1 u2 = 3.5 m-s-1 Estimate the rate of heat transfer from the compressor. Assume for air that CP =_72 R and that enthalpy is independent of pressure.See Answer
Q17:Example 2.16 Air at 1 bar and 25°C enters a compressor at low velocity, discharges at 3 bar, and enters a nozzle in which it expands to a final velocity of 600 m s-1 at the initial conditions of pressure and temperature. If the work of compression is 240 kJ per kilogram of air, how much heat must be removed during compression?See Answer
Q18:2.10 Calculate the internal-energy and enthalpy changes for air when changed from an initial state of 40(°F) and 10(atm), where its molar volume is 36.49(ft)'(lb mole)', to a final state of 140(°F) and 1(atm). Assume for air that PV/T is constant and that C₁= 5 and Cp 7(Btu) (lb mole) •¹ (°F)-¹See Answer
Q19:2. Please consider the isothermal compression of 1 mole of Nitric Oxide (NO) at 270 °C from 1 bar to 77.8 bar. a. Please determine Ah¹G in J/mole. Hint: NO is a diatomic molecule. b. Please use the Method of Lee and Kesler to determine Ah in J/mole. c. Please find the value of Ah in J/mole.See Answer
Q20:1. (Z-1) Please prepare a plot of as a function of P for Steam at 500 °C. Via Graphical Integration, please find the value of A[g/RT] in MPa/MPa for a compression of P; = 1 MPa to P₂ = 5 MPa. PSee Answer

TutorBin Testimonials

I found TutorBin Chemical Thermodynamics homework help when I was struggling with complex concepts. Experts provided step-wise explanations and examples to help me understand concepts clearly.

Rick Jordon

TutorBin experts resolve your doubts without making you wait for long. Their experts are responsive & available 24/7 whenever you need Chemical Thermodynamics subject guidance.

Andrea Jacobs

I trust TutorBin for assisting me in completing Chemical Thermodynamics assignments with quality and 100% accuracy. Experts are polite, listen to my problems, and have extensive experience in their domain.

Lilian King

I got my Chemical Thermodynamics homework done on time. My assignment is proofread and edited by professionals. Got zero plagiarism as experts developed my assignment from scratch. Feel relieved and super excited.

Joey Dip

Popular Subjects for chemical thermodynamics

You can get the best rated step-by-step problem explanations from 65000+ expert tutors by ordering TutorBin chemical thermodynamics homework help.

TutorBin helping students around the globe

TutorBin believes that distance should never be a barrier to learning. Over 500000+ orders and 100000+ happy customers explain TutorBin has become the name that keeps learning fun in the UK, USA, Canada, Australia, Singapore, and UAE.