Which of the Following Statements About the Mechanism of Electrophilic

question 36

Multiple Choice

Which of the following statements about the mechanism of electrophilic aromatic substitution is not true?

• A)All electrophilic aromatic substitution reactions occur via a two-step mechanism.
• B)The transition state of the first step is lower in energy.
• C)The first step is the rate-determining step.
• D)The second step is the fast step.

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Definitions:

Avascular

Referring to tissues or spaces within the body that lack blood vessels, and therefore receive limited blood supply.

Circumferential

Referring to or encompassing the outer boundary or edge of an area or object.

Concentric

Characterized by common center points; in muscle terms, a type of contraction where muscles shorten while generating force.

Interstitial

Referring to the spaces or interstices between tissues or organs in the body, often associated with fluid.