Chemistry

Select the ion in each case that would get selectively discharged from the aqueous mixture of the ions listed below:
(a) SO₄^2-, NO₃^-, and OH^-
(b) Pb²⁺, Ag⁺, and Cu²⁺

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(a) OH^-, Lower the position of the anion in the series, more easily it gets discharged at anode.

(b) Ag⁺, Elements lower in the series gets discharged more easily at the cathode during electrolysis because their cations can easily gain electrons.

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