[Cu(H2O)6]2+

Question 1

[Cu(H2O)6]2+

Answer 1

Blue Solution

Question 2

With OH- (aq) or NH3 (aq)

Answer 2

Cu(H2O)4(OH)2

Blue precipitate

Question 3

With excess OH- (aq)

Answer 3

No change
(Blue precipitate)

Question 4

With excess NH3 (aq)

Answer 4

[Cu(NH3)4(H2O)2] 2+

Deep blue solution

Question 5

With Na2CO3 (aq)

Answer 5

CuCo3

Green/Blue precipitate