For the process: H2O(l)(1 bar, 373 K)⇌H2O(g)(1 bar, 373 K) the correct set of thermodynamic parameters is:
A
ΔG>0,ΔS=+ve
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B
ΔG=0,ΔS=+ve
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C
ΔG=+ve,ΔS=0
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D
ΔG=−ve,ΔS=+ve
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Solution
The correct option is BΔG=0,ΔS=+ve This is a phase transformation and hence, ΔG=0. Since, H2O(l) is changing to H2O(g) at the same temperature and pressure, ΔS=+ve.