Equal moles of He, , and gases are expanded adiabatically and reversibly from the same initial state to the same final volume. The magnitude of work is maximum for (Assume ideal behaviour of gases and

Question

Equal moles of He, $H_2$, $CO_2$ and $SO_3$ gases are expanded adiabatically and reversibly from the same initial state to the same final volume. The magnitude of work is maximum for (Assume ideal behaviour of gases and all the degree of freedoms are active.)

Prashant Kotian · Accepted Answer

Correct answer: D. For reversible adiabatic expansion, work done is w = Δ U = n * * (T2 - T1). Since all degrees of freedom are active, (polyatomic non-linear, high degrees of freedom) has the largest , which results in the highest magnitude of work done during the expansion.

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