Question

Alkyl halides are prepared from alcohol by treating with ______.

(i) HCl + ZnCl₂

(ii) Red P + Br

(iii) H₂SO₄ + KI

(iv) All the above

Answer 1

Alkyl halides are prepared from alcohol by treating with HCl + ZnCl₂ and Red P + Br.

Explanation:

When alcohol was treated with HCl + ZnCl₂ product formed alkyl chloride.

(i) \[\ce{R - OH ->[HCl + ZnCl2] R - Cl + H2O}\]

Also, when alcohol was treated with Red P + Br product formed alkyl bromide.

(ii) \[\ce{R - OH ->[Red P + Br2] R - Br}\]