Question

Equilibrium constant $(K)$ is related with standard cell potential $\left(E_{\text {cell }}^{\circ}\right)$ but not with $E_{\text {cell }}$. This is because

• A. $E_{\text {cell }}^{\circ}$ is easier to calculate as compared to $E_{\text {cell }}$
• B. $E_{\text {cell }}$ becomes zero at equilibrium but $E_{\text {cell }}^{\circ}$ does not
• C. At a given temperature, $E_{\text {cell }}$ changes hence, values of $K$ cannot be measured
• D. $K$ also relates with $E_{\text {cell }}$

Answer 1

Answer: (B)

Correct answer is (b) $E_{\text {cell }}$ becomes zero at equilibrium but $E_{\text {cell }}^{\circ}$ does not