A gas undergoes change from state A to state B. In this process, the heat absorbed and work done by the gas is 5 J and 8 J, respectively. Now gas is brought back to A by another process during which 3 J of heat is evolved. In this reverse process of B to A:

Question

A gas undergoes change from state A to state B. In this process, the heat absorbed and work done by the gas is 5 J and 8 J, respectively. Now gas is brought back to A by another process during which 3 J of heat is evolved. In this reverse process of B to A:, 6 J of the work will be done by the gas, 6 J of the work will be done by the surrounding on gas, 10 J of the work will be done by the surrounding on gas, 10 J of the work will be done by the gas

MARKS App · Accepted Answer

for A to B q = 5 W = − 8 J , Δ U A B = d q + d w ⇒ 5 − 8 Δ U A B = − 3 for B to A q = 5 W = − 8 J , Δ U B A = d q + d w Δ U B A = + 3 d w = + 3 + 3 W B A = 6 J

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