8. Acids, Bases and Salts Flashcards
(38 cards)
1
Q
Litmus in base
A
Blue
2
Q
Litmus in acid
A
Red
3
Q
Phenolphthalein in base
A
Pink
4
Q
Phenolphthalein in acid
A
Colourless
5
Q
Methyl Orange in base
A
Yellow
6
Q
Methyl Orange in neutral
A
Orange
7
Q
Methyl Orange in acid
A
Red
8
Q
Universal Indicator in acid
A
Red
9
Q
Universal Indicator in neutral
A
Green
10
Q
Universal Indicator in base
A
Purple
11
Q
pH 0-2
A
strongly acidic [red]
12
Q
pH 3-6
A
weakly acidic [orange-yellow]
13
Q
pH 7
A
neutral [green]
14
Q
pH 8-11
A
weakly alkaline [blue]
15
Q
pH 12-14
A
strongly alkaline [purple]
16
Q
Acids in aq solution are a source of ___ ions
A
H+
17
Q
Alkalis in aq solution are a source of ___ ions
A
OH-
18
Q
Acid + Alkaline
A
neutralisation
19
Q
Acid is a proton ___
A
Donor
20
Q
Base is a proton___
A
Acceptor
21
Q
Solubility: Nitrates
A
Soluble
22
Q
Solubility: Sodium
A
Soluble
23
Q
Solubility: Ammonium
A
Soluble
24
Q
Solubility: Potassium
A
Soluble
25
Solubility: Chlorides
Soluble [except Silver and Lead]
26
Solubility: Sulfates
Soluble [except Barium, Calcium and Lead]
27
Solubility: Carbonates
Insoluble [except SAP]
28
Solubility: Hydroxides
Insoluble [except SAP]
29
Precipitate
Reaction where an insoluble product is made when mixing two soluble solutions
30
Neutralisation
Acid and base react to form salt + water
31
Metal + acid
salt + hydrogen [H2]
32
Metal oxide + acid
salt + water
33
Metal hydroxide + acid
salt + water
34
Metal carbonate + acid
salt+ water + carbon dioxide
35
Ammonia + acid
Only salt
36
Crystallisation experiment method
1. Heat
2. Add excess of solid
3. Filter
4. Heat again
5. Evaporate some water
6. Leave to crystallise
7. Dry with paper towel
37
H+(aq) + OH- (aq) ->
H2O (l)
38
