1.

In Castner Kellner cell, reaction at mercury cathode is

Answer»

`2H_(2)O+2e^(-)rarr H_(2)+2OH^(-)`
`2Cl^(-)rarrCl_(2)+2e^(-)`
`Na^(+)+OH^(-)rarrNaOH`
`Na^(+)+e^(-)+Hg rarr NAHG`

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