Topic 4 - Acids

Question 1

Indicators ×3

Answer 1

Litmus - Red Blue
Methyl orange - Red Orange Yellow
Phenolphthalein - Colourless Pink

Question 2

Metals Reactions ×5

Answer 2

\+ Metal  - H2
\+ Metal oxides - H2O
\+ Metal hydroxides - H2O
\+ Metal carbonate - CO2 + H2O
\+ Metal hydrocarbonate - CO2 +H2O

Question 3

Ionization

Answer 3

Ionize in H2O

Give H+ - responsible for acidic properties

Question 4

Fizzy drink component

Answer 4

Solid acid

Solid NaHCO3

Question 5

Base defination

Answer 5

Reacts with acid that forms salt and water only

Question 6

Reaction of alkali ×4

Answer 6

Neutralization
+CO2 -> Metal carbonate + H2O (eg limewater)
Alkali + NH4+ -> NH3 + salt + H2O
Metal ions + OH- -> Metal Hydroxide

Question 7

Alkali in water

Answer 7

Dissociation
Not ionization

Except ammonia
Covalent - ionization

Question 8

Corrosive
HCl
H2SO4
HNO3

Answer 8

HCl: white fume
HNO3: Yellow on storage -decompose to NO2
H2SO4: liquid
Involatile
Dehydrating, drying, oxidizing

Question 9

Dilution of H2SO4 (l)

Answer 9

Add conc sul. slowly to a large amount water
Constant stirring

If not,
Conjunction of liquid
Heat - boil the water
Acid splash out