Chemistry · May / June 2022 · Paper 11 · Question 16
5070Electrolysis
Lead(II) bromide is electrolysed using inert electrodes. [diagram: electrolysis cell with inert electrodes, battery with + and − terminals, molten lead(II) bromide] Which statement is correct?
- AA brown gas is seen at the positive electrode.
- BElectrons pass through the solution from one electrode to the other.
- CIons pass through the circuit from one electrode to the other.
- DThe lead(II) ions are oxidised.
As printed in the paper
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Correct answer: A. A brown gas is seen at the positive electrode.
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