Identify the products in the following reactions. Write the IUPAC names and mention the mechanism involved in the reactions.
(i) cyclopentanol `overset(H_(2)SO_(4))underset(Delta) to `
(ii) `"butan"-1-ol overset(NaBr) underset(H_(2)SO_(4)) to`
(iii) neopentyl alcohol `overset(PCl_(5)) to`

Explanation

(i)
(ii) `CH_(3)CH_(2)CH_(2)CH_(2)OH overset(NaBr) underset(H_(2)SO_(4)) to CH_(3)CH_(2) - CH_(2)CH_(2)Br`
It is an nuclephilic substitution reaction.
(iii) `underset("Neo pentyl alcohol") (CH_(3)-underset(CH_(3)) underset(|)overset(CH_(3)) overset(|) C-CH_(2)OH overset(PCl_(5)) to underset("Neo pentyl chloride")(CH_(3)-overset(CH_(3)) overset(|)underset(CH_(3)) underset(|) C-CH_(2)Cl`
1- Chloro -2, 2-dimethyl propane
The reaction follows `SN_(2)` mechanism.