Question

Sodium hydroxide is added drop wise and then in excess to a solution of copper sulphate. State the observation

Answer 1

Answer:When sodium hydroxide solution is added drop by drop to zinc sulphate solution a white precipitate is formed which is soluble in excess of sodium hydroxide.

ZnSO

4

+

2NaOH→

Zn(OH)

2

+

Na

2

SO

4

Zn(OH)

2

+

2NaOH→

Na

2

ZnO

2

+

2H

2

O

Therefore, option A is correct.

Explanation: