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IG Chemistry > C8. Acids, Bases & Salts > Flashcards

C8. Acids, Bases & Salts Flashcards

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1
Q

Solubility in water - Nitrate salts

A

All are soluble

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2
Q

Solubility in water - Ethanoate salts

A

All are soluble

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3
Q

Solubility in water - Sodium, potassium & ammonium salts

A

All are soluble

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4
Q

Solubility in water - Chloride, bromide & iodide salts

A

Not all are soluble

Insoluble: silver chloride, lead(II) iodide

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5
Q

Solubility in water - Sulfate salts

A

Most are soluble

Insoluble: barium sulfate, lead(II) sulfate, calcium sulfate

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6
Q

Solubility in water - Carbonate salts

A

Most are insoluble

Soluble: Sodium carbonate, potassium carbonate, ammonium carbonate

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7
Q

Colours - Potassium, sodium, ammonium, aluminium, calcium, lead(II), zinc salts

A

Solid: white

Aqueous solution: colourless

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8
Q

Colours - Carbonate, chloride, nitrate, sulfate salts

A

Solid: white

Aqueous solution: colourless (except for carbonate precipitates)

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9
Q

Colours - Iron(II) salts

A

Solid: green

Aqueous solution: green

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10
Q

Colours - Iron(III) salts

A

Solid: brown

Aqueous solution: yellow/brown

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11
Q

Colours - Copper(II) salts

A

Solid: blue

Aqueous solution: blue

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12
Q

Colours - Copper(II) carbonate

A

Solid: green

Aqueous solution: N/A (insoluble in water)

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13
Q

Colours - Copper(II) oxide

A

Solid: black

Aqueous solution: N/A (insoluble in water)

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14
Q

Solid zinc oxide - hot

A

Yellow

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15
Q

Solid zinc oxide - cold

A

White

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16
Q

Solid lead(II) oxide - hot

A

Brown

17
Q

Solid lead(II) oxide - cold

A

Yellow

18
Q

Chromate(VI) ion CrO42-

A

Yellow

19
Q

Dichromate(VI) ion Cr2O72-

A

Orange

20
Q

Manganate(VII) ion MnO4-

A

Purple

21
Q

Iron(II) ion

A

Green

22
Q

Iron(III) ion

A

Brown

23
Q

Copper(II) ion

A

Blue

24
Q

Flame test - Lithium ion

A

Flame colour: red

25
Q

Flame test - Sodium ion

A

Flame colour: yellow

26
Q

Flame test - Potassium ion

A

Flame colour: lilac/purple

27
Q

Flame test - Copper(II) ion

A

Flame colour: blue-green

28
Q

Preparation of salt - Why is it necessary to filter the mixture after mixing and stirring?

A

To remove the precipitate/residue

29
Q

Preparation of salt - What is the purpose of washing the precipitate?

A

To remove SOLUBLE impurities

30
Q

Preparation of salt - Why leave the precipitate in a warm oven?

A

To dry solid / to remove water

IG Chemistry (16 decks)

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