complex ion solution equations

Question 1

Cu^2+ in aqueous solution + excess NaOH

Answer 1

insoluble in excess NaOH
no change

Question 2

Cu^2+ in aqueous solution + excess NH3

Answer 2

Cu(OH)2(H2O)4 forms [Cu(NH3)4(H2O)2]^2+ (aq)

Question 3

Fe^2+ in aqueous solution + excess NaOH

Answer 3

insoluble in excess NaOH
no change

Question 4

Fe^2+ in aqueous solution + excess NH3

Answer 4

insoluble in excess NH3
no change

Question 5

Fe3+ in aqueous solution + excess NaOH

Answer 5

no change
insoluble in excess NaOH

Question 6

Fe3+ in aqueous solution + excess NH3

Answer 6

insoluble in excess NH3
no change

Question 7

Mn2+ in aqueous solution + excess NaOH

Answer 7

insoluble in excess NaOH
no change

Question 8

Mn2+ in aqueous solution + excess NH3

Answer 8

insoluble in excess NH3
no change

Question 9

Cr3+ in aqueous solution + excess NaOH

Answer 9

[Cr(OH)3(H2O)3] (s) forms Cr(OH)6^3- (aq)

Question 10

Cr3+ in aqueous solution + excess NH3

Answer 10

[Cr(OH)3(H2O)3 forms Cr(NH3)6^3+