Metals + Ammonia

Question 1

Fe(OH)2 Fe(OH)3, Mn(OH)2

Answer 1

Precipitate not dissolve

Question 2

Cu2+ + dilute ammonia

Answer 2

Pale blue solution-> pale blue precipitate

Question 3

Cu2+ + conc or excess dilute ammonia

Answer 3

Pale blue solution -> deep blue solution

Question 4

Cu2+ + HCl

Answer 4

Pale blue solution -> yellow solution

Question 5

Cr3+ + dilute ammonia

Answer 5

Violet solution -> green/grey precipitate

Question 6

Cr3+ + conc ammonia

Answer 6

Violet solution -> purple solution