A) \[Hg\] is more inert than \[Pt\]
B) more voltage is required to reduce \[{{H}^{+}}\] at \[Hg\] than at \[Pt\]
C) \[Na\]is dissolved in \[Hg\] while it does not dissolve in \[Pt\]
D) concentration of \[{{H}^{+}}\] ions is larger when P\[Pt\] electrode is taken
Correct Answer: C
Solution :
In electrolysis of \[NaCl\] with Pt electrode, sodium deposited at cathode, platinum doesn't reacts with sodium. If electrolysis is carried out with \[Hg\]electrode, sodium deposited at cathode dissolves in \[Hg\] gives sodium amalgam.
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