17B.6 Flashcards
what is the reaction, reaction type, colour change when aq NaOH is added to [Ni(H2O)6]^2+
page 210
what is the colour of [Ni(H2O)6]^2+
Green solution
what is the colour of [Ni(H2O)4(OH)2]^2+
green precipitate
what is the reaction, reaction type, colour change when aq NH3 is added to [Ni(H2O)6]^2+
page 210
what is the reaction, reaction type, colour change when EXCESS aq NaOH is added to [Ni(H2O)4(OH)]
first deprotonation, and then ligand exchange
what is the colour [Ni(NH3)6]^2+
deep blue solution
what is the reaction, reaction type, colour change when aq NaOH is added to [Zn(H2O)6]^2+
page 210
what is the colour of [Zn(H2O)6]^2+
Colourless
what is the colour of [Zn(H2O)4(OH)2]^2+
white precipitate
what is the reaction, reaction type, colour change when EXCESS NaOH is added to [Zn(H2O)4(OH)2]^2+
page 210
what is the reaction, reaction type, colour change when NH3 is added to [Zn(H2O)6]^2+
page 210 reaction -deprotonation - colour change from colourless to white
what is the reaction, reaction type, colour change when EXCESS NH3 is added to [Zn(H2O)4(OH)2]^2+
page 210 - ligand exchange - white precipitate to colourless
zinc oxide is famous for its
amphoteric behaviour as it can act as a base [Zn(H2O)4(OH)2]^2+ + 2H^+ -> [Zn(H2O)6]^2+
what colour is [Zn(NH3)4]^2+
colourless
why does [Zn(NH3)4]^2+ not [Zn(NH3)6]^2+
[Zn(NH3)4]^2+ is favoured since it has a lower energy
