Question

.Write the anode reaction and cathode reaction of

i. electrolysis of molten lead bromide

ii. electrolysis of acidulated water

iii.copper sulphate solution with copper electrode

iv. acidified nickel sulphate solution

v. sodium argent cyanide solution to electroplate brass

spoon with silver.

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Answer 1

Answer:

1 Molten lead bromide, PbBr 2(l), is an electrolyte. During electrolysis: Pb 2+ ions gain electrons at the cathode and become Pb atoms. Br - ions lose electrons at the anode and become Br atoms, which pair up to form Br 2 molecules.