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ICSE Class 10 Chemistry Question 41 of 60

Electrolysis — Question 41

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Question

Question 3(2017)

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

(i) SO42-, NO3- and OH- ;

(ii) Pb2+, Ag+ and Cu2+.

Answer

(i) OH- ion will get discharged in preference to SO42- or NO3- ions.

(ii) Ag+ ions will get discharged in preference to Pb2+ or Cu2+ ions.