1.

Entropy changes for the process H_(2)O(l) rarr H_(2)O(g) at normal pressure and 274 K are given below Delta G_(system) = - 22.13, Delta S_("surroundings") = + 22.05 Then process is non spontaneous because

Answer»

`Delta G_("system")` is -ve
`Delta G_("SURROUNDING")` is +ve
`Delta S_("UNIVERSE")` is -ve
`Delta G_(system) ne Delta S_("surrounding")`

SOLUTION :For a process to be spontaneous `Delta S_("universe")` must be positive. Here,
`Delta S_("universe") = - 22.13 + 22.05 = - 0.08 KJ`


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