An ideal gas, consisting of n moles, undergoes an irreversible process in which the temperature has the same value at the beginning and end.If the volume changes from V_i to V_f, the change in entropy is given by: A)n R(V_f - V_i) B)n R ln(V_f - V_i) C)n R ln(V_i/V_f) D)n R ln(V_f/V_i) E)none of the above (entropy can't be calculated for an irreversible process)

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Quizplus · Accepted Answer

The change in entropy for an ideal gas that undergoes a process where the temperature remains constant (isothermal process) can be calculated using the formula ΔS = nR ln(Vf/Vi), where Vf is the final volume and Vi is the initial volume. This corresponds to choice D.

An Ideal Gas, Consisting of N Moles, Undergoes an Irreversible