1.

During the electrolysis of aqueous zinc nitrate.A. Zince plates out at the cathodeB. Zince plates out at the anodeC. Hydrogen gen `H_(2)` is evolved at the anode.D. Oxygen gas `O_(2)` is evolved at anode

Answer» Correct Answer - a,d
Anqueous `Zn(NO_(3))_(2):`
Cathode `: (sqrt()) Zn^(2+)(aq)+2e^(-) rarr Zn(s)`
`E^(c-)._(Zn^(2+)|Zn)=-0.76V`
`(X)2H_(2)O(l)+2e^(-) rarr H_(2)(g)+2overset(c-)(O)H(aq)`
`E^(c-)._(H_(2)O|H_(2))=-0.83V`
Anode `: (sqrt())2H_(2)O(l) rarr O_(2)(g)+4H^(o+)(aq)+4e^(-)`
`E^(c-)._(H_(2)O|O_(2))`
`(X)NO_(3)^(c-)rarr x`


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