1.

By which of the following methods, H_(2)O_(2) can't be synthesised?

Answer»

LEWIS ADDITION of ice cold `H_(2)SO_(4)` on `BaO_(2)`
Addition of ice cold `H_(2)SO_(4)` on `PbO_(2)`
Aerial oxidation of 2-ethyl anthraquinol
Electrolysis of `(NH_(4))_(2)SO_(4)` at a high current density

Solution :`H_(2)SO_(4)+PbO_(2) to PbSO_(4) DARR+(1)/(2)O_(2)+H_(2)O` (`PbO_(2)` is not peroxy compound)
`H_(2)SO_(4)+BaO_(2) to BaSO_(4) darr+H_(2)O_(2)`

`(NH_(4))_(2)SO_(4) hArr 2NH_(4)^(+)+SO_(4)^(2-)`
At anode: `2SO_(4)^(2-) overset("Electrolysis")toS_(2)O_(8)^(2-)+2e^(-)`
Peroxo SULPHATE hydrolysis, produces `H_(2)O_(2)`


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