Module 11: Acids & Bases

Question 1

A proton donor is an ________

Answer 1

Acid

Question 2

A proton acceptor is a _________

Answer 2

base

Question 3

T/F: water can act as a acid or base

Answer 3

T

Question 4

A base produces a conjugate ________

Answer 4

acid

Question 5

an acid produces a conjugate ________

Answer 5

base

Question 6

What is a strong acid/base?

Answer 6

An acid/base that will completely ionize when dissolved in water

Question 7

What are the strong acids?
Need to memorize them all 6

Answer 7

HCl
HBr
HI
HNO₃
HClO₄
H₂SO₄

Question 8

What is a weak acid/base?

Answer 8

An acid/base that will partially ionize when dissolved in water

Question 9

Most drugs are _______ acid/bases

Answer 9

weak

Question 10

Strong acids have ______ conjugate bases

Answer 10

weak

Question 11

Weak acids have _______ conjugate bases

Answer 11

strong

Question 12

Bases and acids always have _______ pairs

Answer 12

conjugate

Question 13

What does equilibrium mean?

Answer 13

The rate of the forward reaction is equal to the right of the reverse reaction

Question 14

What formation does equilibrium favor?

Answer 14

weaker acid

Question 15

What does ionize mean?

Answer 15

To break apart into its ion

To completely dissociate

Question 16

What are my strong bases?

Answer 16

LiOH
NaOH
KOH
Sr(OH)₂
Ca(OH)₂
Ba(OH)₂

Question 17

Is NH₃ a weak base or a weak acid?

Answer 17

Weak base

Question 18

K =

Answer 18

is a constant

= Products/reactants

Question 19

Describe K_w

Answer 19

Water constant

measure of self ionization of water

H2O + H2O < == > H3O + OH-

Kw = 1.0 x 10^(-14)

Question 20

pH + pOH =

Answer 20

14

Question 21

Desciribe Acid/Base pH

Answer 21

Acids <7
Base >7
Neutral = 7

Question 22

What are some basic items from 14 to 7?

Answer 22

NaOH (sodium hydroxide)
Household ammonia
toothpaste
baking soda

Question 23

What has around a neutral pH?

Answer 23

pure water

Question 24

What are some acidic items from 7 to 0?

Answer 24

urine
black coffee
cola/vinegar
gastric juices
HCl (hydrochloric acid)

Question 25

What is normal phyisological pH?

Answer 25

7.35 - 7.45

Question 26

In the human body, what pH ranges are considered acidotic? alkalotic?

Answer 26

Acidotic: below 7.35

Alkalotic: above 7.45

Question 27

At what pH do we expect death?

Answer 27

Below 7.00
above 7.8

Question 28

The pH scale is based off factors of _____ times.

Answer 28

10

Question 29

If your pH goes from 6.00 to 7.00, what is happening to the body?

Answer 29

The body has become 10 times MORE BASIC or 10 times LESS ACIDIC

Question 30

What is the pKa of water?

Answer 30

16

Question 31

What is the pKa scale range?

Answer 31

-20 to >60

Question 32

What does a lower pKa mean?

Answer 32

More acidic
Easier to remove a proton (proton donor)

Question 33

What does it mean if something has a pKa above or below water?

Answer 33

pKa of water is 16

if lower than 16: can undergo acid-base reactions w/ hydroxide

if above: cannot