Which from following is NOT true about electrolysis of molten NaCl ?
Which from following is NOT true about electrolysis of molten NaCl ?
$\mathrm{Cl}_2$ gas is liberated at anode.
Na is deposited at cathode.
The decomposition of NaCl into $\mathrm{Na}_{(\mathrm{s})}$ and $\mathrm{Cl}_{2(\mathrm{~g})}$ is spontaneous.
Electrical energy is used to carry out the reaction.
Solution
The decomposition of NaCl into $\mathrm{Na}_{(\mathrm{s})}$ and $\mathrm{Cl}_{2(\mathrm{~g})}$ is not spontaneous as cell potential for the process is negative.