The sodium extract on acidification with acetic acid and then adding lead acetate solution gives a black precipitate. The organic compound contains

Open in App

Solution

$Analysing the reaction$

The sodium fusion extract is acidified with acetic acid and lead acetate is added to it. A black precipitate of lead sulphide indicates the presence of sulphur in organic compounds.

$N a_{2} S + P b (C H_{3} C O O)_{2}$
Lead acetate
$↓ C H_{3} C O O H$
$P b S (↓) + 2 C H_{3} C O O N a$
Black precipitate.

So, the organic compounds contain sulphur.

Hence, the correct answer is Option (c).

Suggest Corrections

Similar questions

Q. The sodium extract of an organic compound on acidification with acetic acid and addition of lead acetate solution gives a black precipitate.
The organic compound contains :

Q. Lassaigne extract is acidified with acetic acid and then lead acetate solution is added. It forms black precipitate of :

When sodium fusion extract is acidified with acetic acid and lead acetate is added to it a black precipitate of lead sulphide indicates the presence of:

Q. Lassaigne extract having

N a_{2} S

when acidified with acetic acid and on addition of lead acetate produces a black precipitate of :

Q. For the detection of sulphur in an organic compound, the Lassaigne's extract is acidified with dilute acetic acid and lead acetate is then added to it. The black precipitate is obtained, which is due to the formation of:

Join BYJU'S Learning Program

Explore more

Silver Nitrate Test

Standard X Chemistry

Join BYJU'S Learning Program