Qualitative Analysis

Question 1

It is a method of analysis that determines the precise and point of a reaction and therefore the precise quantity of reactant in the titration flask

Answer 1

Tetrimetric (volumetric) analysis

Question 2

This an analytical method in which the volume of a solution of known concentration consumed during an analysis is taken as a measure of the amount of active constituent in a sample being analyzed.

Answer 2

Titremetric ( volumetric ) analysis

Question 3

Used to deliver the second reactant to the flask

Answer 3

Burette

Question 4

Used to detect the endpoint of the reaction

Answer 4

Indicator ph meter

Question 5

It is a compound that is meant to be assayed or analyze

Answer 5

Analyte

Question 6

Solution of known concentration ( molar / normal )

Answer 6

Standard solution

Question 7

Solutions or compounds that are able to manifest endpoint of titration process

Answer 7

Indicator

Question 8

This is the point in the titration process where the added titrant is chemically equivalent in the sample

Answer 8

Equivalence point

Question 9

Also known as the stoichiometric point

Answer 9

Equivalence point

Question 10

It is non observable to the naked eye

Answer 10

Equivalence point

Question 11

This is the occurrence of an observable physical change indicating that the equivalence point is reached

Answer 11

Endpoint

Question 12

This is considered as a highly purified compound that is used as a reference standard titration processes

Answer 12

Primary standard

Question 13

This is a standard use that does not meet requirements for a primary standard but is available with sufficient purity and properties to be acceptable as such

Answer 13

Secondary standard

Question 14

This is a process where the concentration of a solution is determined

Answer 14

Standardization

Question 15

What are the six properties of a primary standard

Answer 15

High purity, stable in air, independent in relative humidity, readily available, reasonable
solubility, large formula weight

Question 16

Three properties of a secondary standard

Answer 16

Prepared from primary standard, stable, reacts rapidly and completely with analyte

Question 17

These are complex organic compounds used in the following manner: determination of the endpoint in neutralization processes, determination of hydrogen ion concentration, visual manifestation that a desired change in ph has been effected

Answer 17

Indicator

Question 18

What is the criteria of a good indicator

Answer 18

It can produce a sharp contrast between two colors which it exhibits in acid and alkaline mediums

Question 19

It is used to sharpen up the color change

Answer 19

Mix indicators

Question 20

What is the rules for the use of indicators:

Answer 20

Use three drops of indicator test solution for a titration unless otherwise directed

When a strong acid is titrated with a strong alkali or a strong alkali with a strong acid use metal orange metal red or phenolphthalein

Weak acid is titrated with a strong alkali use phenolphthalein

Weak base is titrated with a strong acid use methyl red

Weak alkali should never be titrated with a weak acid or vice versa since no indicator will give a sharp endpoint

Question 21

These are chemical processes in which an acid reacts with a base

The products are salt and water

Answer 21

Neutralization reactions

Question 22

It is a substance that increases the concentration of H3O+ hydronium ion in aqueous solution

Answer 22

Acid

Question 23

Substance that decreases the concentration of H3O+ in aqueous solution

Increases concentration of OH-

Answer 23

Base

Question 24

Any ionic solid such as ammonium chloride

Answer 24

Salt