Question

2. Identify the group of compounds showing incomplete dissolution in aqueous solution.

(a) Hydrochloric acid, nitric acid (b) Carbonic acid, phosphoric acid

(c) Hydrochloric acid, phosphoric acid (d) Copper sulphate solution, sugar solution.​

Answer 1

Answer:

The group of compounds which dissociates partially in aq. solutions are Carbonic acid (H

2

CO

3

) and Phosphoric acid (H

3

PO

4

) because these compounds do not dissociates completely. Their dissociation is as follows-

H

2

CO

3

Aq.

H

+

+HCO

3

−

(Partially dissociated)

H

3

PO

4

Aq.

H

+

+H

2

PO

4

−

(Partially dissociated)