Chapter 11

Question 1

Buret

Answer 1

A piece of volumetric glassware, usually graduated in 0.1-mL intervals, that is used in titrations to deliver solutions in a quantitative (dropwise) manner

Question 2

End point

Answer 2

The point at which an indicator changes color and a titration is stopped

Question 3

Equivalence point

Answer 3

The point at which chemically equivalent amounts of reactants have reacted

Question 4

Equivalent weight in acid-base reactions

Answer 4

The mass of an acid or base that furnishes or reacts with 6.022 x 10²³ H₃O⁺ or OH^- ions

Question 5

Half-reaction

Answer 5

Either the oxidation part or the reduction part of a redox reaction

Question 6

Indicator

Answer 6

For acid-base titrations, an organic compound that exhibits its diffrent colors in solutions of different acidiities; used to determine the point at which the reaction between two solutes is complete

Question 7

Milliequivalent

Answer 7

1/1000 equivalent

Question 8

Millimole

Answer 8

1/1000 mole

Question 9

Molarity (M)

Answer 9

The number of moles of solute per liter of solution or the number of millimoles of solute per milimiter of solution

Question 10

Normality (N)

Answer 10

The number of equivalent weights (equivalents) of solute per liter of solution

Question 11

Oxidation

Answer 11

An algebraic increase in oxidation number; may correspond to a loss of electrons

Question 12

Oxidation-reduction reaction

Answer 12

A reaction in which oxidation and reduction occur; also called redox reaction

Question 13

Oxidizing agent

Answer 13

The substance that oxidizes another substance and is reduced

Question 14

Primary standard

Answer 14

A substance of a known high degree of purity that undergoes one invariable reaction with the other reactant of interest

Question 15

Redox reaction

Answer 15

An oxidation-reduction reaction

Question 16

Redox titration

Answer 16

The quantitative analysis of the amount or concentration of an oxidizing or reducing agent in a sample by observing its reaction with a known amount or concentration of a reducing or oxidizing agent

Question 17

Reducing agent

Answer 17

The substance that reduces another substance and is oxidized

Question 18

Reduction

Answer 18

An algebraic decrease in oxidation number; may correspond to a gain in electrons

Question 19

Secondary standard

Answer 19

A solution that has been titrated against a primary standard. A standard solution in a secondary standard.

Question 20

Standard solution

Answer 20

A solution of accurately known concentration

Question 21

Standardization

Answer 21

The process by which the concentration of a solution is accurately determined by titrating it against an accurately known amount of a primary standard

Question 22

Titration

Answer 22

The process by which the volume of a standard solution required to react with a specific amount of substance is determined