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WBJEEFor an ideal gas, consider only P-V work in going from an initial...
For an ideal gas, consider only P-V work in going from an initial state X to the final state Z. The final state Z can be reached by either of the two paths shown in the figure. Which of the following choice(s) is (are) correct?
[Take ΔS as change in entropy and w as work done].
[Take ΔS as change in entropy and w as work done].
Solution:
ΔSX→Z=ΔSX→Y+ΔSY→Z [Entropy is a state function, hence additive]
wX→Y→Z=wX→Y [Work done in Y→Z is zero because it is an isochoric process].
wX→Y→Z=wX→Y [Work done in Y→Z is zero because it is an isochoric process].
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