Question

3. The chemical equation for the combustion of ethylene (C2H4) is shown below: Consider 14.0 g of ethylene (M = 28.0 g/mol) being combusted at a constant pressure of 100

kPa in a container(oxygen is present in excess). The temperature is constant at 25°C. a) (3 marks) How much work is done (in kJ) AND what is the change in volume (AV) of the container (in L)? b) (1 mark) What is the heat (with respect to the system) associated with this exact reaction (using the quantity of ethylene given) if conducted at a constant pressure of 100 kPa? Express your answer in kJ. c) (1 mark) What is the A,U associated with this exact reaction (using the quantity of ethylene given)? Express your answer in kJ. C_{2} H_{4(g)}+3 O_{2(g)} \rightarrow 2 H_{2} O_{(C)}+2 C O_{2(g)} \Delta_{r} H^{\circ}=-1387 k J m o l^{-1}

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