Volumetric analysis

Question 1

Is a quantitative analysis based on the measurement of the volume of solution that gives reaction.

Answer 1

Volumetric analysis

Question 2

The concentration of the analyte can be found by reacting it with

Answer 2

A standard solution with a known concentration

Question 3

The volumetric analysis is based on the

Answer 3

stoichiometry between reactive species

Question 4

The reason for dilution _________ or that analysis can be repeated when necessary.

Dilution ratio:
Dilution factor:

Answer 4

Reduction of reagent or increase of volume of samples
amount before
amount after

Question 5

Are solutions that have exactly known concentration and react with analytes

Answer 5

Standard solution

Question 6

The standard solution
can be prepared by _______
Then,the precise concentration of the standard solution can be found by ________

Answer 6

Precisely weighing the required amount of reagent.

The reaction with special substances called primary standards

Question 7

A _______ is highly pure compound that serves as a reference material in volumetric and mass titrimetric methods. The accuracy of a method is critically dependent on the properties of this compound.

Answer 7

primary standard

Question 8

Requirements for a primary standard

Answer 8

1. Highly pureorexactpuritymustbeknown.
2. Atmosphericstability.
3. Absenceofhydratewatersothatthecompositionofthesoliddoesnotchangewithvarioushumidity.
4. Modestcost.
5. Reasonablesolubilityinthetitrationmedium.
6. Reasonablylargemolarmasssothattherelativeerrorassociatedwithweighingthestandardis minimized.

Question 9

Characteristics of Quantitative Reaction

Answer 9

1. Reaction must be specific and unique.
2. Reaction must be in one direction.
3. There action must be fast.
4. The end of the reaction Can be detected easily.
5. The reaction must be repeatable yieldings a meresultseverytime.

Question 10

Characteristics of Quantitative Reaction

Answer 10

1. Reaction must be specific and unique.
2. Reaction must be in one direction.
3. There action must be fast.
4. The end of the reaction Can be detected easily.
5. The reaction must be repeatable yieldings a meresultseverytime.

Question 11

Primary standards for acid standardization

Primary standards for base standardization

Answer 11

KHCO3 Potassium bicarbonate
TlCO3 Titanium carbonate
Na2CO3 Sodium carbonate
.......
KHC8H4O4 Potasium phtalate
H2C2O4. 2H2O oxalic aid
HC7H5O2 Hydrogen Benzoate