Chemistry - Electrochemistry Question with Solution | TestHub

$\Delta G$ is negative if $E_{cell}$ is positive, as $\Delta G=-nF{E}_{cell}$.

For the given concentration cell,

$E_{cell}=-\frac{0.0591}{2}\log \left(\frac{C_1}{C_2}\right)$

If $C_2>C_1$, then $E_{cell}$ is positive and $\Delta G$ is negative.