Titrations

Question 1

Volumetric Analysis

Answer 1

Analysis of concentration of a reactant using volume

Question 2

Basis of titration

Answer 2

The concentration in moles per litre of one reactant
The exact volumes of both reactants
The ration in which both reactants react in a balanced equation

Question 3

Standard solution

Answer 3

Solution whose concentration is known accurately

Question 4

Primary standard must be: 1

Answer 4

Pure + stable
If unstable it reacts with other things before reaction
Pure so we know what we are weighing

Question 5

Primary standard

Answer 5

Chemical that makes up standard solution

Question 6

Primary standard must be: 2

Answer 6

Soluble in water

Question 7

Primary standard must be: 3

Answer 7

Does not lose or gain molecules of water of crystallisation

Question 8

Déliquescence/ hydroscopity

Answer 8

Absorb water from surrounding

Question 9

Efflorescence

Answer 9

Losing water

Question 10

Primary standard must be: 4

Answer 10

Does not absorb O2/ CO2 readily

Question 11

Primary standard must be: 5

Answer 11

Has a high relative molecular mass to reduce percentage error

Question 12

Titration 1

Answer 12

Na2CO3 -> HCL
Methyl orange
yellow -> pink

Question 13

Titration 2

Answer 13

HCL -> NaOH
Methyl orange
yellow -> pink

Question 14

Titration 3

Answer 14

NaOH -> CH3COOH
Phenolphthalein
Pink to colourless