Question detail
In the electrolysis of aqueous solutions, what is produced at the anode if no halide ions are present?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Electrolysis
Question
- A. Chlorine
- B. Bromine
- C. Oxygen
- D. Hydrogen
Answer
Oxygen
Explanation
If no halide ions are present in an aqueous solution, oxygen is produced at the anode during electrolysis.
Common mistake
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.
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