Species are formed in one step of reaction mechanism and used up in another step are called:
Correct answer: B. Intermediate
- A. Catalyst
- B. Intermediate
- C. inhibitor
- D. activated complex
Explanation
An intermediate is formed in one elementary step and consumed in a later step, so it does not appear in the overall reaction equation. The likely alternative is an activated complex, but that is the short-lived high-energy arrangement at the top of an energy barrier, not a species formed and then used up.
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About Rate of Reaction
Reaction rate measures the change in concentration of a reactant or product per unit time. Questions connect rate with concentration, temperature, pressure, surface area, catalysts and nature of reactants, and may involve rate laws, reaction order, activation energy and collision theory. Rate describes speed, whereas equilibrium describes the final balance of opposing reactions.
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