During electrolysis of molten NaCl, some water is added, What will happen :
During electrolysis of molten NaCl, some water is added, What will happen :
A. Electrolysis will stop.
B. Hydrogen will evolve
C. Some amount of caustic soda will be formed
D. A fire is likely.
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Correct Answer - B::C::D
(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 catch fire.
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