WAEC Chemistry 2022 Objective — Question 8
Question 8 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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Which of the following statements about the standard hydrogen electrode is not correct?
- A. The hydrogen gas is at a pressure of 1 atmosphere
- B. A solution containing 1 mol dm⁻³ of H⁺(aq) ions is used
- C. A platinum electrode is used
- D. The temperature is kept at 20°CCorrect
Explanation
The standard hydrogen electrode is defined at a temperature of 25°C (298K), not 20°C — making option D the incorrect statement.
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