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For a phase change H(2)O(l) to H(2)O (g)...

For a phase change `H_(2)O(l) to H_(2)O` (g)

A

`DeltaG=0`

B

`DeltaS=0`

C

`DeltaH=0`

D

`DeltaU=0`

Text Solution

Verified by Experts

The correct Answer is:
a
`DeltaG^(@)= RTlnK`
[`Delta G^(@)`=standard free energy change K= equilibrium constant]
If a substance is in equilibrium between two phases at constant temeprature and pressure, its chemical potential must have the same value in the phases.
`:. Delta G^(@)=0`
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