Question

How will you distinguish between the following pairs? Write chemical reactions.

(i)$C{H}_{3}OH$ and $C_2{H}_{5}OH$

(ii)Propan-1-ol and propan-2-ol

(iii)Propan-1-ol and 2-methylpropan-2-ol

(iv)Ethanol and propane-1-ol

Answer 1

(i) $C_2{H}_{5}OH$ gives iodoform test positive showing yellow ppt but $C{H}_3{O}_4$ does not.

(ii)Propane$-2-ol$ gives turbidity in $10$ minutes with Lucas reagent but Propane$-1-ol$ turbidity in $30$ minutes.

(iii)$2-methylpropan-2-ol$ give turbidity immediately when treated with Lucas reagent but propan$-1-01$ takes $30$ minutes.

(iv)Ethanol gives $+ive$ iodoform test but propan$-1-ol$ does not.