Chapter 9

Question 1

What is Le Chateliers Principle?

Answer 1

If dynamic equilibrium is distributed, the position of equilibrium shifts the counter active change

Question 2

What is the dynamic equilibrium?

Answer 2

Exist in a system composed of at least two states when the populations of the two states are constant, even though the members of the system are constantly changing from one state to another

Question 3

What is the equilibrium constant?

Answer 3

Expresses the relationship between products & reactants at equilibrium

Question 4

The equilibrium constant’s numerical description is between

Answer 4

Bond strengths & intermolecular forces between all the molecules in the system

Question 5

Equilibrium favors the

Answer 5

Reactive side, which shifts to the right

Question 6

The concentrations of solids & liquids do not

Answer 6

Appear in the equilibrium constant

Question 7

Acids will _______ a hydrogen ion

Answer 7

Donate

Question 8

A base will _______a hydrogen ion

Answer 8

Accept

Question 9

An acid is a species that

Answer 9

Increases the hydronic ion H3O concentration in an aqueous solution

Question 10

A base is a species that

Answer 10

increases the hydroxide ion OH concentration in an aqueous solution

Question 11

In an acid-base reaction, the acid is converted into its

Answer 11

Conjugate base & the base is converted into its conjugate acid

Question 12

What is an amphiprotic species?

Answer 12

Can behave as either an acid or a base (water)

Question 13

A strong acid will completely

Answer 13

Ionize in an aqueous solution (completely dissociates in water)

Question 14

A strong acid has a

Answer 14

Weak conjugate base

Question 15

What is the strongest base?

Answer 15

Hydroxide

Question 16

Weak bases do not

Answer 16

Completely ionize in water

Question 17

Dynamic equilibrium is established between

Answer 17

An acid & base

Question 18

What is a common weak acid?

Answer 18

Ammonium

Question 19

What is a polyprotic acid?

Answer 19

Capable of losing more than a single proton per molecule

1st stage (fastest)-most easily lost

Question 20

Phosphorilic acid is a

Answer 20

A weak acid (also triprotic)

1st proton is readily donated

Question 21

There are equilibrium constants for

Answer 21

Each weak acid (Ka)

Question 22

A larger equilibrium constant means a

Answer 22

Stronger acid (Kb)- equilibrium constant for a weak base

Question 23

In pH, “p” means

Answer 23

Negative Logarithm

Question 24

The “H” in pH is

Answer 24

Hydrogen ion concentration

Question 25

There are ______ different orders of magnitude

Answer 25

14

Question 26

Logarithmic functions help

Answer 26

Map a range onto a smaller set, with each number differing by a factor of 10

Question 27

Water acts as both an

Answer 27

Acid & base

Question 28

The pHh of any solution will add up to

Answer 28

14

Question 29

The equilibrium constant for acid & bases are presented as

Answer 29

pKa & pKb

Question 30

With pKa & pKb, the "p" stands for

Answer 30

The power of

Question 31

Strong acid & bases completely ionize in water, meaning every

Answer 31

Mole of acid falls into an equal number of hydrogen ions & every mole of base falls into an equal number of hydroxide ion

Question 32

Acids & bases react to

Answer 32

Give salts

Question 33

Salts of strong acids do not

Answer 33

Participate

Question 34

Salts of weak bases & acids

Answer 34

Do participate

Question 35

pH of lidocaine is slightly

Answer 35

Acidic Lidocaine is a weak base, so the salt will be an acid

Question 36

A pH buffer is a solution that

Answer 36

Resists changes in pH

Question 37

Solutions will contain

Answer 37

A weak acid & its conjugated base or weak base & conjugated acid

Question 38

When a small amount of strong acid or base is added to a solution, the pH will

Answer 38

Change, but not as nearly as much as if it were non-buffered

Question 39

A strong acid & its conjugated base have no buffer action because

Answer 39

The acid dissociates completely leaving no acid behind for buffer action

Question 40

If a strong base is added to a buffer solution, the weak acid in the buffer will

Answer 40

React with water & weak base, which causes the pH to increase, but not by much

Question 41

If a strong acid is added to a buffer solution, the weak base in the buffer will

Answer 41

React to hydrogen ion to give HA, which is a weak acid

Question 42

What is the primary buffer system in the blood

Answer 42

Carbonic acid

Question 43

The Henderson-Hasselbalch equation shows the

Answer 43

Relationship between pH & pOh of a solution or pKa/pKb

Question 44

The pH of a buffer depends on the

Answer 44

Ratio of weak base to its conjugated acid, not the numerical value of each

Question 45

You can dilute buffer with water &

Answer 45

Not change pH of the solution

Question 46

In order to be an effective buffer, there has to be a

Answer 46

Concentration of both the weak acids & weak base