Chemistry UNIT 5 Inorganic reactions

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What is a Lewis acid?
An electron pair acceptor.
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What is a lewis base?
An electron pair donor.
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What is formed when transition metal salts dissolve in water?
Aqua ion complexes.
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In aqueous solutions do the metal ions act as lewis acids or bases?
Lewis acid because they accept electron pairs from the water molecules.
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What is the general equation for when [M(H2O)6]2+ reacts with water?
[M(H2O)6]+2 + H2O ------> [M(H2O)5OH] + H3O+.
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Why do the water ligands act as Lewis bases?
Each H2O ligand donates a lone pair of electrons to the ion, forming a coordinate bond.
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Why are M3+ ions more acidic than M2+?
Smaller, highly charged ions exert a greater polarising effect on the water ligands, so that more O-H bonds break, releasing H+ ions.
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What is the product formed when a base is added to a solution of transition metal aqua ions and what properties does it have?
The final product is an uncharged, insoluble metal hydroxide that forms a precipitate.
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Which complexes will a further reaction happen to if excess ammonia is added?
Co2+, Cu2+ and Cr3+ complexes.
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What is formed when sodium carbonate reacts with M3+ aqua ions?
A hydrated metal hydroxide, bubbles of carbon dioxide and water.
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What is formed when sodium carbonate reacts with M2+ aqua ions?
An insoluble metal carbonate and water.
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What is it called when a metal hydroxide can react as both an acid and a base?
Amphoteric.
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Card 2

Front

What is a lewis base?

Back

An electron pair donor.

Card 3

Front

What is formed when transition metal salts dissolve in water?

Back

Preview of the front of card 3

Card 4

Front

In aqueous solutions do the metal ions act as lewis acids or bases?

Back

Preview of the front of card 4

Card 5

Front

What is the general equation for when [M(H2O)6]2+ reacts with water?

Back

Preview of the front of card 5
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