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

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

Flashcards in Chapter 4 -----.1.4- Thermal Stability Of Group 2&1 Compounds Deck (41):
1

Group 1
With heat
Lithium nitrate

Brown fumes

2

Group 1
With heat
Sodium nitrate

No brown fumes

3

Group 1
With heat
Potassium nitrate

No brown fumes

4

Group 1
With heat
Rubidium nitrate

No brown fumes

5

Group 1
With heat
Caesium nitrate

No brown fumes

6

Group 2
With heat
Beryllium nitrate

Brown fumes

7

Group 2
With heat
Magnesium nitrate

Brown fumes

8

Group 2
With heat
Calcium nitrate

Brown fumes

9

Group 2
With heat
Strontium nitrate

Brown fumes

10

Group 2
With heat
Barium nitrate

Brown fumes

11

Group 1
Decomposition
Lithium nitrate

Greater decomposition

12

Group 1
Decomposition
Sodium nitrate

Lesser decomposition

13

Group 1
Decomposition
Potassium nitrate

Lesser decomposition

14

Group 1
Decomposition
Rubidium nitrate

Lesser decomposition

15

Group 1
Decomposition
Caesium nitrate

Lesser decomposition

16

Group 2
Decomposition
Beryllium nitrate

Greater decomposition

17

Flame test

Mix compound w HCl to turn into chloride as more volatile

18

Lithium flame test

Red

19

Sodium flame test

Yellow/orange

20

Potassium flame test

Lilac

21

Rubidium flame test

Red / purple

22

Caesium flame test

Blue/ violet

23

Beryllium flame test

No colour

24

Magnesium flame test

No colour

25

Calcium flame test

Brick red

26

Strontium flame colour

Crimson red

27

Barium flame colour

Apple green

28

Group 2 metals with water down group

Increase down group

29

Group 2 metals with oxygen

Increases vigorously down group

30

Reactions with group 2 metals and chlorine

Increases with vigour down group

31

Magnesium and steam

MgO (s)

32

Group 2 ionisation energies

Decreases down group

33

Group 2 oxides w water

Colourless solution

MO(s) + H2O(l) —> M(OH)2(aq)

34

Solubility of group 2 hydroxides

Solubility increases down group
Maximum alkalinity increases down group

35

NaCl and sulfúrico acid

Misty fumes HCl

36

NaBr and sulfúrico acid

Misty fumes Hydrogen Bromide HBr


Brown fumes Bromine BR2


Colourless has w choking smell Sulfúr dioxide SO2

37

NaI and sulfuric acid

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

Nitrate

V

39

Nitrite

iii

40

Silver nitrate reaction

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

41

Ammonia w halides

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