(a) One mole of an ideal gas initially at 300 K and at a pressure of 10 atm undergoes adiabatic expansion. (i) Reversibly and (ii) Irreversibly against a constant external pressure of 2 atm until the final pressure becomes equal to the external pressure. Calculate $\Delta S_{\text{system}}$ for (i) and (ii). For (ii), express the final answer in terms of R. Given: Molar heat capacity at constant volume $C_{v,m} = 3R/2$.
Answer
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