A substance which does not appear in balanced chemical reaction is called:
Correct answer: C. Reaction intermediate
- A. Buffer
- B. Spectator substance
- C. Reaction intermediate
- D. None of these
Explanation
An intermediate is a species which appears in the mechanism of a reaction, but not in the overall balanced equation. An intermediate is always formed in an early step in the mechanism and consumed in a later step.
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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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