Question
Which of the following is true at chemical equilibrium ?
A.
$${\left( {\Delta G} \right)_{T,P}}$$ is minimum and $${\left( {\Delta S} \right)_{U,V}}$$ is also minimum
B.
$${\left( {\Delta G} \right)_{T,V}}$$ is minimum and $${\left( {\Delta S} \right)_{U,V}}$$ is maximum
C.
$${\left( {\Delta G} \right)_{T,V}}$$ is maximum and $${\left( {\Delta S} \right)_{U,V}}$$ is zero
D.
$${\left( {\Delta G} \right)_{T,P}}$$ is zero and $${\left( {\Delta S} \right)_{U,V}}$$ is also zero
Answer :
$${\left( {\Delta G} \right)_{T,P}}$$ is zero and $${\left( {\Delta S} \right)_{U,V}}$$ is also zero
Solution :
The condition for the equilibrium is
$${\left( {\Delta G} \right)_{T,P}} = 0\,\,{\text{and}}\,\,{\left( {\Delta S} \right)_{U,V}} = 0$$