JAMB Chemistry 2020 Objective — Question 35
Question 35 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2020 Objective paper, with the correct answer and a full explanation.
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35. Chlorine was passed into water, then the mixture was exposed to sunlight. Which of the following gas was released?
- A. A. H2
- B. B. O2Correct
- C. C. HCl
- D. D. HOCl
Explanation
Chlorine water exposed to sunlight decomposes to release oxygen gas, as the chloric(I) acid formed (HOCl) breaks down: 2HOCl -> 2HCl + O2.
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