A substance which does not appear in balanced chemical reaction is called:
Correct answer: C. Reaction intermediate
- A. Buffer
- B. Spectator ion
- C. Reaction intermediate
- D. None of these
Explanation
The correct answer is 'Reaction intermediate.' Reaction intermediates are transient species that appear in the steps of a reaction mechanism but do not appear in the overall balanced chemical equation. They are formed and consumed during the course of the reaction.Option A (Buffer) is incorrect because buffers relate to pH stability, not reaction mechanisms or equations. Option B (Spectator ion) is incorrect because spectator ions are present in the reaction equation but do not participate in the reaction. Option D (None of these) is incorrect because 'Reaction intermediate' is the correct term for the species described in the question.
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