Which of the following statements regarding the E1 mechanism is wrong?
a) Reactions by the E1 mechanism are unimolecular in the rate-determining step.
b) Reactions by the E1 mechanism are generally first order.
c) Reactions by the E1 mechanism usually occur in one step.
d) Reactions by the E1 mechanism are multi-step reactions.
Option c is the correct answer, but I have a few questions regarding option b being true:
Is the reaction which follows E1 mechanism always a first order reaction? Are there any examples with the second or higher orders?
Dehydration of secondary alcohol in the presence of concentrated sulfuric acid follows E1. What is the order for this reaction?
Does the number one in E1 represent molecularity or order of the reaction? According to me, it is usually molecularity of RDS, not the order, because option b says E1 reactions are generally 1st order, not always.