Question

Select the ion in each case, that would get selectively discharged from the aqueous mixture of the ions listed below:

(1) SO₄^2- , NO^–₃ and OH^– ;

(2) Pb^2- , Ag⁺ and Cu^{2+ .}

Answer 1

1. OH ion will get discharged in preference to SO₄^2- or NO₃ ^– ions.

2. Ag⁺ ions will get discharged in preference to Pb²⁺ or Cu²⁺ ions