WAEC Chemistry 2022 Objective — Question 10
Question 10 of 50 from the West African Examinations Council (WAEC) Chemistry 2022 Objective paper, with the correct answer and a full explanation.
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The products of the electrolysis of dilute sodium chloride using carbon electrodes are: Anode / Cathode
- A. chlorine and sodium
- B. oxygen and hydrogenCorrect
- C. chlorine and hydrogen
- D. hydrogen and oxygen
Explanation
Using inert (carbon) electrodes, electrolysis of dilute NaCl solution produces oxygen at the anode (from OH⁻ discharge, water being in excess) and hydrogen at the cathode.
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