Question

Cell reaction is spontaneous, when

• A. $E_{red}^{\circ }$ is negative
• B. $\Delta G^{\circ }$ is negative
• C. $E_{oxid}^{\circ }$ is positive
• D. $\Delta G^{\circ }$ is positive

Answer 1

Answer: (B)

As we know,
For a spontaneous cell reaction $E_{\text{cell }}^{\circ }>0$
and accoding to $\Delta G^{\circ }=-nF{E}^{\circ }=-ve$ and
$Q<K_c$ so reaction moves forward to attain eqm.