WAEC Chemistry 2022 Objective — Question 28
Question 28 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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A hydrogen chloride gas reacted with oxygen to yield water and chlorine gas. The mole ratio of the hydrogen chloride gas to water is
- A. 1:3
- B. 2:1Correct
- C. 3:1
- D. 4:1
Explanation
4HCl + O2 → 2H2O + 2Cl2. Mole ratio of HCl : H2O = 4 : 2 = 2:1.
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