Question

How would you convert ethyne to acetone?

Answer 1

Explanation:

The conversion involves the following steps.

(1) Ethyne (acetylene) on hydration in presence of mercuric sulphate and dilute sulphuric acid gives ethanal (acetaldehyde).

C2H2 + H2O = CH3CHO

(2) Ethanal on oxidation yields ethanoic acid (acetic acid).

(3) Acetic acid is then converted to calcium acetate by neutralising it with lime (CaO).

(4) Calcium acetate on dry distillation yields acetone.

(CH3COO)2Ca = CH3COCH3 + CaCO3

Answer 2

Answer:

1) On adding a soln of ammoniacal Na, ethyne will form HC CNa.

2)On addition of CH3Br to this, it will form propyne.

3) Propyne on reaction withHgSO4 gives acetone.