Write the half equation for the oxidation of bromide ions (Br-) at the anode during electrolysis.

Common Mistake in Writing Half Equations

Students often confuse the half equations for reactions at the anode and cathode, mistakenly writing the oxidation reaction at the cathode instead of the anode.

To fix this, remember that oxidation occurs at the anode, where negative ions lose electrons. Always identify the electrode and the type of reaction (oxidation or reduction) before writing the half equation.