The half-reaction that should occur at the anode during electrolysis of an aqueous potassium bromide solution is

Question

Quizplus · Accepted Answer

During electrolysis of an aqueous potassium bromide solution, the positive potassium ions (K+) will migrate towards the negative electrode (cathode) and gain electrons to become potassium metal. At the same time, the negative bromide ions (Br-) will migrate towards the positive electrode (anode). At the anode, the bromide ions will release electrons to form elemental bromine gas (Br2) or undergo oxidation to produce a different species.

The half-reaction that should occur at the anode during electrolysis of an aqueous potassium bromide solution is as follows:

2Br- (aq) → Br2 (g) + 2e-

This half-reaction shows the oxidation of the bromide ions (Br-) to form bromine gas (Br2) and release two electrons. Therefore, the best choice is D.

The Half-Reaction That Should Occur at the Anode During Electrolysis →\rarr→

The Half-Reaction That Should Occur at the Anode During Electrolysis $\rarr$