name the cations that remains as a spectator ion is the solution on an action of nickel II sulphate
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Reaction at cathode (Reduction) Reaction at Anode (Oxidation)
Ions at cathode : Ni 2+ ,H +
Preferential discharge of Ni 2+
ions takes place.
Ni 2+ (aq)+2e − →Ni 0 (s)
Nickel metal deposits on the article. i.e. nail. Ions at anode : SO 4 2− ,OH − Ni 0 (s)−2e − →Ni 2+ (aq) Ni 2+
ions are formed at anode.
None of the above ions discharge at anode ; instead Ni atoms of the anode lose electrons to form Ni 2+ ions.
Explanation:
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