Solving pH and pKa

Question 1

How would you describe the Ka and pKa of a strong acid?

Answer 1

large Ka
small pKa

Question 2

pKa is affected by ?

Answer 2

steric and electronic factors

Question 3

when pH = pKa

Answer 3

[base form] = [acid form]

Question 4

when pH < pKa

Answer 4

functional group is in an acidic environment with lots of protons

Question 5

when pH > pKa

Answer 5

the functional group is in a basic environment with minimal protons

Question 6

If the functional group is the same as its environment it will be primarily ?

Answer 6

unionized

Question 7

If a functional group is different from its environment it will be primarily ?

Answer 7

ionized

Question 8

lpH - pKal = 0

Answer 8

50:50 ratio between ionized and unionized forms

Question 9

lpH - pKal = 1

Answer 9

there’s a 90:10 ratio between ionized and unionized forms

Question 10

lpH - pKal = 2

Answer 10

there’s a 99:1 ratio between ionized and unionized forms

Question 11

lpH - pKal = 3

Answer 11

there’s a 99.9:0.1 ratio between ionized and unionized forms

Question 12

lpH - pKal = 4

Answer 12

there’s a 99.99:0.01 ratio between ionized and unionized forms