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A Level Chemistry > Chapter 4 -----.1.4- Thermal Stability Of Group 2&1 Compounds > Flashcards

Chapter 4 -----.1.4- Thermal Stability Of Group 2&1 Compounds Flashcards

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1
Q

Group 1
With heat
Lithium nitrate

A

Brown fumes

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2
Q

Group 1
With heat
Sodium nitrate

A

No brown fumes

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3
Q

Group 1
With heat
Potassium nitrate

A

No brown fumes

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4
Q

Group 1
With heat
Rubidium nitrate

A

No brown fumes

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5
Q

Group 1
With heat
Caesium nitrate

A

No brown fumes

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6
Q

Group 2
With heat
Beryllium nitrate

A

Brown fumes

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7
Q

Group 2
With heat
Magnesium nitrate

A

Brown fumes

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8
Q

Group 2
With heat
Calcium nitrate

A

Brown fumes

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9
Q

Group 2
With heat
Strontium nitrate

A

Brown fumes

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10
Q

Group 2
With heat
Barium nitrate

A

Brown fumes

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11
Q

Group 1
Decomposition
Lithium nitrate

A

Greater decomposition

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12
Q

Group 1
Decomposition
Sodium nitrate

A

Lesser decomposition

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13
Q

Group 1
Decomposition
Potassium nitrate

A

Lesser decomposition

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14
Q

Group 1
Decomposition
Rubidium nitrate

A

Lesser decomposition

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15
Q

Group 1
Decomposition
Caesium nitrate

A

Lesser decomposition

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16
Q

Group 2
Decomposition
Beryllium nitrate

A

Greater decomposition

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17
Q

Flame test

A

Mix compound w HCl to turn into chloride as more volatile

18
Q

Lithium flame test

A

Red

19
Q

Sodium flame test

A

Yellow/orange

20
Q

Potassium flame test

A

Lilac

21
Q

Rubidium flame test

A

Red / purple

22
Q

Caesium flame test

A

Blue/ violet

23
Q

Beryllium flame test

A

No colour

24
Q

Magnesium flame test

A

No colour

25
Q

Calcium flame test

A

Brick red

26
Q

Strontium flame colour

A

Crimson red

27
Q

Barium flame colour

A

Apple green

28
Q

Group 2 metals with water down group

A

Increase down group

29
Q

Group 2 metals with oxygen

A

Increases vigorously down group

30
Q

Reactions with group 2 metals and chlorine

A

Increases with vigour down group

31
Q

Magnesium and steam

A

MgO (s)

32
Q

Group 2 ionisation energies

A

Decreases down group

33
Q

Group 2 oxides w water

A

Colourless solution

MO(s) + H2O(l) —> M(OH)2(aq)

34
Q

Solubility of group 2 hydroxides

A

Solubility increases down group

Maximum alkalinity increases down group

35
Q

NaCl and sulfúrico acid

A

Misty fumes HCl

36
Q

NaBr and sulfúrico acid

A

Misty fumes Hydrogen Bromide HBr

Brown fumes Bromine BR2

Colourless has w choking smell Sulfúr dioxide SO2

37
Q

NaI and sulfuric acid

A

Misty fumes - hydrogen iodide HI

Purple fumes/ black solid - iodine I2

Colourless has w choking smell - sulfúr dioxide SO2

Yellow solid sulfúr S

Colourless Gas w rotten egg smell hydrogen sulfide H2S

38
Q

Nitrate

A

V

39
Q

Nitrite

A

iii

40
Q

Silver nitrate reaction

A

Chloride - white ppt
Bromide - cream ppt
Iodide - yellow ppt

41
Q

Ammonia w halides

A

Chloride -soluble in dilute aqueous and conc aqueous ammonia

Bromide- soluble in dilute aqueous. Insoluble in conc aqueous ammonia

Iodide - insoluble in dilute aqueous and concept aqueous ammonia

A Level Chemistry (5 decks)

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