If a concentrated solution of potassium bromide is electrolysed, what gas will be produced at the cathode?

Question

Chemistry

Jordan Fitzpatrick

16 November, 17:51

If a concentrated solution of potassium bromide is electrolysed, what gas will be produced at the cathode?

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Answers (1)

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Jenkins · Answer 1

Molten lead bromide

Explanation:

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.