Question

Which of the following compounds gives trichloromethane on distilling with bleaching powder [KCET 2004; EAMCET 1986]
A) Methanal B) Phenol C) Ethanol D) Methanol

Answer 1

C ) ETHANOL is the right answer .

Answer 2

The compounds that gives trichloromethane on distillation of bleaching powder is (C) Ethanol.

Explanation:

Trichloromethane is $CHCl_3$ that is also called as chloroform. It is mainly prepared by bleaching powder. The chemical formula of bleaching powder is $CaOCl_2$. When it reacts with ethanol that is $\bold{C_2H_5OH}$; it form chloroform that is Trichloromethane or $CHCl_3$.

Here bleaching powder released active chlorine that will react with ethanol to form chloroform.