Which of the following statements regarding the E1 mechanism is wrong?

Reactions by the E1 mechanism are unimolecular

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Reactions by the E1 mechanism are generally first order.

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Reactions by the E1 mechanism usually occur in one step.

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Reactions by the E1 mechanism are multi-step reactions.

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Solution

The correct option is C Reactions by the E1 mechanism usually occur in one step.
E1 mechanism is two/multi step process. First the leaving group will leave the substrate to form a stable carbocation intermediate. In second step, the proton abstraction takes place to form alkenes. Formation of carbocation is the slowest step and it is the rate determining step. Hence, it is first order and unimolecular.

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