Exam 2 Chm 122 Spring ‘03
1. (2 points) Circle the strongest acid.
CH3OH BrCH2OH Br2CHOH
2. (4 points) Circle the strongest base in each set.
a) CH3CH3CH3OLi CH3NHNa
b) CH3CH2OH CH3CH2ONa
O
C ONaCH3
3. (6 points) The following alcohols may look similar on paper, but they behave quite
differently in acid/base reactions. One has a pKa of 10 and the other has a pKa of 16. Which
compound has which pKa? In the space provided explain your reasoning.
OH OH
Exam 2 Chm122 Summer ‘02
4. (6 points) Rank the following compounds in order of increasing acidity. Clearly indicate
which is most acidic in each set.
a)
CH
3
CHOH
Br
CH
3
CH
2
OH BrCH
2
CH
2
OH
b)
(CH
3
)
2
NH
2
(CH
3
)
2
NH CH
3
OH
5. (6 points) Rank the following compounds in order of increasing basicity. Clearly indicate
which is most basic in each set.
a)
HC CNa H
2
C CHNa CH
3
CH
2
Na
b)
CH
3
NH
2
CH
3
OH CH
3
SH
