Sodium hydroxide is manufacture by the electrolysis of brine solution. The reaction by `-` products are `:`

Options

A. `Cl_2` and `H_2`
B. `Cl_2` and `Na-Hg`
C. `Cl_2` and NaCl
D. `Cl_2` and `O_2`

Answer

A

Explanation

`NaCl(conc.)hArr Na^(+)+Cl^(-)`
`H_2O hArr H^(+)+OH^(-)`
At cathode : `2H^(+)+2e^(-)toH_2 uarr`
At anode: `2Cl^(-)toCl_2 uarr +2e^(-)`
`Na^(+) + OH^(-) to NaOH`