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Transition Element Reactions

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Total cards: 7•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (7)

#1
Front (Question)

What does the addition of aqueous ammonia (2NH3) or aqueous sodium hydroxide (2OH-) form?

Back (Answer)

They both from hydroxide precipitates with the aqueous metal ion: Cu2+(aq) + 2OH- –> [Cu(OH)2(H2O)4] (s) +H2O(l) Cu2+(aq) + 2NH3 –> [Cu(OH)2(H2O)4] (s) + 2NH4+

#2
Front (Question)

Do COPPER hydroxide ions dissolve in excess NaOH or excess ammonia?

Back (Answer)

Excess ammonia

#3
Front (Question)

What does copper II hydroxide form when excess ammonia is added?

Back (Answer)

It forms [Cu(NH3)4(H2O)2] + 4NH3 —> 2H2O + 2OH-

#4
Front (Question)

What is iron 2 hydroxide insoluble in?

Back (Answer)

Aqueous excess ammonia and sodium hydroxide

#5
Front (Question)

What is iron 3 hydroxide insoluble in?

Back (Answer)

EXcess sodium hydroxide and excess aqueous ammonia

#6
Front (Question)

What is mangannese 2 hydroxide insolube in?

Back (Answer)

Excess aqueous ammonia and sodium hydroxide

#7
Front (Question)

What is Chromium 3 hydroxide soluble in?

Back (Answer)

Excess sodium hydroxide and ammonia. Forms [Cr(OH)6]3- = dark green solution