1.

The order of rate of hydrolysis of alkyl halides 1^(@),2^(@),3^(@) and CH_(3)X by the S_(N)2 pathway is

Answer»

`1^(@) gt 2^(@) gt 3^(@)gtCH_(3)X`
`CH_(3)X gt 3^(@) gt 2^(@) gt 1^(@)`
`CH_(3)X gt 1^(@) gt 2^(@) gt 3^(@)`
`3^(@) gt 2^(@) gt 1^(@)gtCH_(3)X`

Solution :Reactivity DECREASES as steric hindrance increases, i.e., `CH_(3)X gt 1^(@) gt 2^(@) gt 3^(@)`.


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