Question

write a balanced chemical equation when Ammonium hydroxide is added to zinc chloride solution first a little and then in excess ​

Answer 1

ZnCl2 +2NH4OH ➡️

Zn(OH)2⬇️ + 2NH4Cl ,when added in little quantity.

When ammonium hydroxide is added in excess,then it dissolves in it to form a gelatin white precipitate of zincate.

Zn(OH)2 +4NH4OH➡️

Zn(NH3)4 (OH)2 +4H2O .

Thank you!