2.6 - Reactions of Aqueous Ions

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

Equation for reaction of [Fe(H₂O)₆]²⁺ & NaOH?

Back (Answer)

[Fe(H₂O)₆]²⁺ + 2OH⁻ |> [Fe(H₂O)₄(OH)₂] + 2H₂O

Front (Question)

Acid-Base reaction of [M(H₂O)₆]²⁺ & OH⁻?

Back (Answer)

[M(H₂O)₆]²⁺ + 2OH⁻ |> [M(H₂O)₄(OH)₂] + 2H₂O

Front (Question)

Why can [Al(H₂O)₃(OH)₃] not be hydrolysed further by NH₃?

Back (Answer)

Ammonia is a Weak Base

Front (Question)

Equation for Oxidation of Iron(II)Hydroxide to Iron(III)Hydroxide?

Back (Answer)

[Fe(H₂O)4(OH)₂] |> [Fe(H₂O)₃(OH)₃] + H⁺ + e⁻

Front (Question)

Reaction of [Al(H₂O)₃(OH)₃] & Acid?

Back (Answer)

[Al(H₂O)₃(OH)₃] + 3HCl |> [Al(H₂O)₆]³⁺ + 3Cl⁻

Front (Question)

Equation for reaction of [Cu(H₂O)₆]²⁺ & NaOH?

Back (Answer)

[Cu(H₂O)₆]²⁺ + 2OH⁻ |> [Cu(H₂O)₄(OH)₂] + 2H₂O

Front (Question)

Colour of FeCO₃?

Back (Answer)

Green ppt

Front (Question)

What is produced when 3⁺ metal ions react with Na₂CO₃?

Back (Answer)

Metal Hydroxide & CO₂

Front (Question)

Colour change: [Fe(H₂O)₆]²⁺ & Na₂CO₃?

Back (Answer)

Green Solution |> Green Precipitate

#10

Front (Question)

Equation for reaction of [Fe(H₂O)₆]³⁺ & Na₂CO₃?

Back (Answer)

2[Fe(H₂O)₆]³⁺ + 3Na₂CO₃ |> 2[Fe(H₂O)₃(OH)₃] + 3CO₂ + 3H₂O + 6Na⁺

#11

Front (Question)

Colour of [Fe(H₂O)₃(OH)₃]?

Back (Answer)

Brown ppt

#12

Front (Question)

Why are [M(H₂O)₆]³⁺ ions more Acidic than [M(H₂O)₆]²⁺ ions?

Back (Answer)

M³⁺ is smaller & more highly charged than M²⁺ & is able to polarise the water ligands more O-H bonds in water are weakened more readily & protons are more easily donated

#13

Front (Question)

Why are Transition metal ions coloured?

Back (Answer)

Incomplete d-subshell, frequencies of visible light are absorbed as electrons move from lower energy (ground state) to a higher energy (excited state), the remaining frequencies are reflected, producing the complementary colour.

#14

Front (Question)

Colour of [Fe(H₂O)₆]²⁺?

Back (Answer)

Green

#15

Front (Question)

Colour of [Cu(H₂O)₆]²⁺?

Back (Answer)

Blue

#16

Front (Question)

Colour of [Fe(H₂O)₆]³⁺?

Back (Answer)

Purple (brown in air)

#17

Front (Question)

Colour of [Al(H₂O)₆]³⁺?

Back (Answer)

Colourless

#18

Front (Question)

Why do Water Ligands not affect the overall ionic charge?

Back (Answer)

Water is not a Charged Particle

#19

Front (Question)

Define: Acid

Back (Answer)

Substance that donates H⁺ ions

#20

Front (Question)

Equation for reaction of [Fe(H₂O)₆]³⁺ & NH₃?

Back (Answer)

[Fe(H₂O)₆]³⁺ + 3NH₃ |> [Fe(H₂O)₃(OH)₃] + 3NH₄⁺

#21

Front (Question)

Colour change when Sodium Hydroxide is added to [Fe(H₂O)₆]³⁺?

Back (Answer)

Purple Solution ⊳ Brown Precipitate

#22

Front (Question)

What type of reaction is metal-aqua ion + ammonia?

Back (Answer)

Acid-Base

#23

Front (Question)

Equation for reaction of [Cu(H₂O)₆]²⁺ & Na₂CO₃?

Back (Answer)

[Cu(H₂O)₆]²⁺ + Na₂CO₃ |> CuCO₃ + 2Na⁺ + 6H₂O

#24

Front (Question)

Define: Hydrolysis

Back (Answer)

Breaking of a bond using water