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Order of Reaction

All of the fo...

Question

All of the following choices are proposed steps in the mechanism for the same overall reaction.
Which step would be rate determining?

A + B \to C, r a t e = m e d i u m

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4 F + G + H \to 2 I, r a t e = s l o w

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2 C + B \to D, r a t e = f a s t

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3 D + 2 E \to F, r a t e = f a s t

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Solution

The correct option is C $4 F + G + H \to 2 I, r a t e = s l o w$
In a multi-step reaction, the rate determining step is always the slowest-step in the mechanism.

Therefore, (B) is the correct answer.

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