Question

The $\Delta$G in the process of melting of ice at -15${}^0$C is:

• A. $\Delta$G is -Ve
• B. $\Delta$G is +Ve
• C. $\Delta$G =0
• D. All of these

Answer 1

The correct option is B $\Delta$G is +Ve

for melting of ice $\Delta H=$ + ve
Temperature is low and $\Delta S=$ slightly positive
Therefore in such condition

$\Delta G=\Delta H-T\Delta S=$ + ve

Melting of ice is not spontaneous process.

Hence $\Delta G$ is +ve.