1. The conjugate base of water is
a) H2O
b) H3O+
c) HO-
d) none of the above
2. A compound with a pKa of -2 would be considered
a) a strong acid
b) a weak acid
c) neutral
d) a weak base
e) a strong base
f) impossible
3. A compound with a pKa of 5 would have an acid dissociation constant of
a) 5
b) 100,000
c) 5,000
d) 1/5000
e) 0.00001
4. The relative order of acidity is
a) H2O > NH3 > HF
b) H2O > HF > NH3
c) NH3 > HF > H2O
d) NH3 > H2O > HF
e) HF > H2O > NH3
f) HF > NH3 > H2O
5. Carboxylic acids are stronger acids than alcohols primarily due to the effects of
a) electronegativity
b) H-bonding
c) resonance
d) formal charges