Q42. For the electro chemical cell If $\mathrm { E } _ { \left( \mathrm { M } ^ { 2 + } / \mathrm { M } \right) } ^ { 0 } = 0.46 \mathrm {~V}$ and $\mathrm { E } _ { \left( \mathrm { x } / \mathrm { X } ^ { 2 - } \right) } ^ { 0 } = 0.34 \mathrm {~V}$. Which of the following is correct?\\
(1) $\mathrm { M } + \mathrm { X } \rightarrow \mathrm { M } ^ { 2 + } + \mathrm { X } ^ { 2 - }$ is a spontaneous reaction\\
(2) $\mathrm { E } _ { \text {cell } } = 0.80 \mathrm {~V}$\\
(3) $\mathrm { E } _ { \text {cell } } = - 0.80 \mathrm {~V}$\\
(4) $\mathrm { M } ^ { 2 + } + \mathrm { X } ^ { 2 - } \rightarrow \mathrm { M } + \mathrm { X }$ is a spontaneous reaction