Single Choice

Rank the following in order of decreasing rate of solvolysis with aqueous ethanol (fastest $$\rightarrow $$ slowest)

A$$2 > 1 > 3$$
B$$1 > 2 > 3$$
C$$2 > 3 > 1$$
Correct Answer
D$$1 > 3 > 2$$

Solution

Hence the rate of solvolysis depends on the stability of intermediate formed as reaction with aqueous ethanol.

Rate of solvolysis $$\propto$$stability of intermediate.
Here,the intermediate formed in (2) is most stable due to the +I effect of both $$C{H}_{3}$$- and $${C}_{6} {H}_{6} $$group

Therefore stability order is (2)>(3)>(1)

Therefore,rate of solvolysis is (2)>(3)>(1)

Hence, option $$C$$ is correct.

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