Calculate the standard heat of formation of liquid hexane, C, H14(1), using the standard heats of combustion given below:(a)[5 man C_{6} H_{14}(l)+\frac{19}{2} O_{2}(g) \rightarrow 6 C O_{2}(g)+7 H_{2} O(l) \quad

\Delta \widehat{H}_{c}^{o}=-4163.1(k J / m o l) C(s)+O_{2}(g) \rightarrow C O_{2}(g) \quad \Delta \widehat{H}_{c}^{o}=-393.51(k J / m o l) H_{2}(g)+\frac{1}{2} O_{2}(g) \rightarrow H_{2} O(l) \quad \Delta \widehat{H}_{c}^{o}=-285.84(k J / m o l) The reaction of ammonia with oxygen to form nitrogen dioxide and steam is givenbelow: 4 N H_{3}(g)+7 O_{2}(g) \rightarrow 4 N O_{2}(g)+6 H_{2} O(g) Calculate the standard heat of reaction for the above reaction. The standard heats of formation for NH3(g), NO2(g), and H20(1) as well as the heat of vaporisation for water at 100°C and 1 atm are given below (the heat capacity formulas area Available in Table Q4 on page 5).[7 marks] \frac{1}{2} N_{2}(g)+\frac{3}{2} H_{2}(g) \rightarrow N H_{3}(g) \quad \Delta \widehat{H}_{f}^{o}=-46.19(k J / m o l) \frac{1}{2} N_{2}(g)+O_{2}(g) \rightarrow N O_{2}(g) \quad \Delta \widehat{H}_{f}^{o}=33.8(k J / m o l) \mathrm{H}_{2}(\mathrm{~g})+\frac{1}{2} \mathrm{O}_{2}(g) \rightarrow \mathrm{H}_{2} \mathrm{O}(l) \quad \Delta \widehat{H}_{f}^{o}=-285.84(\mathrm{~kJ} / \mathrm{mol}) \begin{array}{l} 0\\ \text { a }\\ \text { a }\\ \text { a }\\ \text { a }\\ \text { a }\\ \text { a }\\ H_{2} O(l) \rightarrow H_{2} O(g)\\ \left.\Delta \widehat{H}_{n}\left(100^{\circ} \mathrm{C}, 1 \mathrm{~atm}\right)=40.656(k] / m o l\right) \end{array}