The gas given off at the cathode is hydrogen while the gas given off at the anode is oxygen.
The term electrolysis has to do with the decomposition of a substance by the passage of a direct current through it.
The ions present in the system are[tex]H^+[/tex], [tex]OH^-[/tex] and [tex]NO_3^-[/tex] ions. The gas given off at the cathode is hydrogen while the gas given off at the anode is oxygen.
The half-reaction equation of the reduction is;
[tex]2H^+(aq) + e[/tex] → [tex]H_2(g)[/tex]
The oxidation half-reaction equation is;
[tex]4OH^- (aq)[/tex] → [tex]2H_2O(l) + 4e[/tex]
The overall equation is;
[tex]4H^+(aq) + 4OH^- (aq)[/tex] → [tex]4H_2(g) + 2H_2O(l) + 4e[/tex]
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