1.

During electrolysis of molten NaCl, some water is added, What will happen :

Answer»

ELECTROLYSIS will STOP.
Hydrogen will evolve
Some amount of caustic soda will be formed
A fire is likely.

Solution :(b,C, d) At cathode : `Na^(+)+e^(-) to Na`
At anode : `Cl^(-) to 1//2 Cl_(2)+e^(-)`
On adding water,
`Na+H_(2)O to NaOH+1//2 H_(2)`
The reaction is highly exothermic. As a result, `H_(2)` EVOLVED is likely to catchfire.


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