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 surroundings on gas, 10 J of the work will be done by the surroundings 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 , ΔU AB = dq + dw = 5 − 8 ΔU AB = − 3 for B to A ΔU BA = dq + dw ΔU BA = + 3 3 = - 3 + W BA W BA = 6 J

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