Anachem Concepts

Question 1

Deals with the measurement of the mass of a substance that is chemically related to analyte

Answer 1

Gravimetric method

Question 2

Measures the volume of solution necessary to react with analyte

Answer 2

Volumetric method

Question 3

Measures the electromagnetic radiation produced by the analyte or its interactions with it

Answer 3

Spectroscopic method

Question 4

Measures the electrical properties of the analyte

Answer 4

Electroanalytic method

Question 5

Solution of known concentration

a. standard solution
b. standardization
c. primary standard

Answer 5

a. standard solution

Question 6

Process of determining the concentration of an unknown solution

a. standard solution
b. standardization
c. primary standard

Answer 6

b. standardization

Question 7

A substance of high purity used for standardization

a. standard solution
b. standardization
c. primary standard

Answer 7

c. primary standard

Question 8

Lewis acid and base

Answer 8

acid-electron-pair acceptor

base-electron-pair donor

Question 9

Bronsted-Lowry acid and base

Answer 9

acid-proton donor

base-proton acceptor

Question 10

Arrhenius acid and base

Answer 10

acid- produces H3O+

base- produces HO-

Question 11

Acid and base reacts to form

Answer 11

salt and water

Question 12

Analytical Methods classified as micro analyses use sample mass ranging from

a. <1 mg
b. 1-10 mg
c. 10-100 mg
d. >100 mg

Answer 12

a. <1 mg ULTRAMICRO Analyses
b. 1-10 mg MICRO Analyses
c. 10-100 mg SEMI-MICRO Analyses
d. >100 mg MACRO Analyses

Question 13

What grade of water as defined by British Standard 3978 is suitable for determination of trace quantities which can be prepared by the distillation of de-ionized water?

Answer 13

Grade 2

Question 14

Expressed as the volume of solution chemically equivalent to a mass of a solid reagent. This also the minimum volume of solution needed to reach the endpoint.

a. titer
b. aliquot
c. molarity

Answer 14

a. titer

Question 15

Process by which an agglomerated colloid return to its dispersed state during washing due to leaching of electrolyte responsible for its coagulation.

a. nucleation
b. coagulation
c. agglomeration
d. peptization

Answer 15

d. peptization

Question 16

Chemicals which are tested by the manufacturers showing the actual percentages of impurities and labeled on the containers are called

a. reagent grade chemicals
b. analytical reagents
c. technical grade
d. all of the above

Answer 16

a. reagent grade chemicals - for general lab use
b. analytical reagent - purest form
c. technical grade - commercial use

therefore, B.