WAEC Chemistry 2018 Objective — Question 9
Question 9 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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Consider the following reaction equation: Br₂ + 2KI → 2KBr + I₂. Bromine is reacting as a(n)
- A. oxidizing agentCorrect
- B. reducing agent
- C. acid
- D. base
Explanation
The oxidation number of bromine decreases from 0 (in Br₂) to −1 (in KBr) — bromine is reduced, meaning it acts as the oxidizing agent.
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