Question

Which of the following compounds reacts immediately with Lucas reagent?

Options

• CH₃CH₂OH

• CH₃CH₂CH₂OH

• $$\begin{array}{c}\mathrm{CH}{\phantom{A}}_3-\mathrm{CH}-\mathrm{CH}{\phantom{A}}_3\\ |\phantom{..}\\ \mathrm{OH}\end{array}$$

• $$\begin{array}{c}\phantom{...}\mathrm{CH}{\phantom{A}}_3\\ |\\ \mathrm{CH}{\phantom{A}}_3-\mathrm{C}-\mathrm{CH}{\phantom{A}}_3\\ |\\ \phantom{..}\mathrm{OH}\end{array}$$

Answer 1

$$\begin{array}{c}\phantom{...}\mathrm{CH}{\phantom{A}}_3\\ |\\ \mathrm{CH}{\phantom{A}}_3-\mathrm{C}-\mathrm{CH}{\phantom{A}}_3\\ |\\ \phantom{..}\mathrm{OH}\end{array}$$

Explanation:

3° alcohol reacts immediately with lucas reagent (HCl + anhydrous ZnCl₂) to form two distinct layers.