QUESTION 4 a) A process involving an ideal gas is carried out in which the temperature changes (AT) at constant volume (V). Consider the following two processes Process A: for a fixed value AT, the mass of the gas (m) is doubled. Process B: the process is repeated with the same initial mass but AT is doubled. State which process has a greater change in entropy (AS). Explain your answer in terms of AS for each process. Write your answer here b) One mole of N2 at 20.5 °C and 6.00 bar undergoes a transformation to the state described by 145 °C and 2.75 bar. Calculate change in entropy (AS) (in unit J K-1). (Assume ideal gas behaviour). Given that the molar heat capacity at constant pressure T. T2 73

QUESTION 4 a) A process involving an ideal gas is carried out in which the temperature changes (AT) at constant volume (V). Consider the following two processes Process A: for a fixed value AT, the mass of the gas (m) is doubled. Process B: the process is repeated with the same initial mass but AT is doubled. State which process has a greater change in entropy (AS). Explain your answer in terms of AS for each process. Write your answer here b) One mole of N2 at 20.5 °C and 6.00 bar undergoes a transformation to the state described by 145 °C and 2.75 bar. Calculate change in entropy (AS) (in unit J K-1). (Assume ideal gas behaviour). Given that the molar heat capacity at constant pressure T. T2 73