Question

Name the acidic radicals which nither tested by dil H2SO4 nor by concntrated H2SO4

Answer 1

Explanation:

Identification of some acidic radicals is carried out by adding dilute HCl or dilute H

2

SO

4

and concentrated H

2

SO

4

.

Group I radicals are detected by dilute H

2

SO

4

.

These acidic radicals are carbonate (CO

3

2−

), sulphite (SO

3

2−

), sulphide (S

2−

) and nitrite (NO

2

−

).

When dilute sulphuric acid is added to salt, a gas is liberated which is characteristic of the particular acidic radical.