Question

state the relevant observation for each of the following sodium hydroxide is slowly added and than in excess, to zinc sulphate solution​

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