Question

Which of the following is always true regarding the spontaneity of reaction occuring in a galvanic cell?

• A. $E{{}^0}_{cell}>0,\Delta G^0<0$ and $Q>K_c$
• B. $E{{}^0}_{cell}>0,\Delta G^0<0$ and $Q<K_c$
• C. $E{{}^0}_{cell}>0,\Delta G^0>0$ and $Q>K_c$
• D. $E{{}^0}_{cell}>0,\Delta G^0>0$ and $Q<K_c$

Answer 1

Answer: (B)

$E{{}^0}_{cell}>0,\Delta G^0<0$ and $Q<K_c$

The galvanic cell in which spontaneous reaction occurs has a positive value of standard cell potential, a negative value of free energy change and the reaction quotient is smaller than the equilibrium constant.

Hence, option B is correct.