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Compound A is prepared by the electrolys...

Compound A is prepared by the electrolysis of aqueous solution of B using castner- Kellner cell with mercury as cathode and carbon as anode. A and B respecitvely are

A

NaOH, NaCl

B

NaCl, NaOH

C

`NaHCO_(3)` , NaOH

D

`Na_(2)CO_(3), NH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
In castner - Kellner cell,
Reaction at anode is
`Cl^(-) rarr (1)/(2) Cl_(2) + e^(-)`
Reaction cathode is
`Na^(+) + e^(-) rarr` Na
`2H_(2)O + 2e^(-) rarr 2OH^(-) + H_(2) uarr `
Hence, in castner- Kellner cell NaOH is produced by NaCl solution.
hence, option (a) is correct.
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