Aliphatic nucleophilic substitution mainly takes place by two mechanisms (i.e) `SN^1 & SN^2` Primary halides mainly undergo by `SN^2` mechanism and are favourable in polar aprotic solvents. `SN^1` reactions takes place mainly by tertiary halide and are more favourable in polar protic solvents, In case of tertiary halides, `E_1` comes competition to `SN^1` reaction. Keeping in view of these general points, answer the following questions
`(+)C_6H_5CH(CH_3)Cl to (pm) C_6H_5CH(OH)CH_3` in which of the following solvents, the above reaction is most favourable

Options

A. 75% water + 25% `CH_3OH`
B. 25% water + 75% methanol
C. 100% methanol
D. 10% water + 90% methanol

Answer

A

Explanation

Given reaction follows `SN^1` mechanism, which takes place favorable in polar solvents due to formation of cation is the intermediate step