College Chemistry Ii Phs 1035 Practice Exam 3 With Answer Key Page 4
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3921) Classify the following compounds as weak acids (W) or strong acids (S):
21)
hypochlorous acid
perchloric acid
chloric acid
A) W S S
B) S S S
C) S W W
D) W W W
E) W S W
22) Ammonia is a ________.
22)
A) weak acid
B) strong base
C) weak base
D) strong acid
E) salt
23) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant K b for A - ?
23)
H 2 A + (aq) + OH - (aq)
A) HA (aq) + H 2 O (l)
B) A - (aq) + H 3 O + (aq)
HA (aq) + H 2 O (l)
C) HA (aq) + OH - (aq)
H 2 O (l) + H + (aq)
D) A - (aq) + H 2 O (l)
HA (aq) + OH - (aq)
HOA 2- (aq)
E) A - (aq) + OH - (aq)
24) A- is a weak base. Which equilibrium corresponds to the equilibrium constant K a for HA?
24)
H 2 A + (aq) + OH - (aq)
A) HA (aq) + H 2 O (l)
B) A - (aq) + H 3 O + (aq)
HA (aq) + H 2 O (l)
H 3 O + (aq) + A - (aq)
C) HA (aq) + H 2 O (l)
D) A - (aq) + H 2 O (l)
HA (aq) + OH - (aq)
HOA 2- (aq)
E) A - (aq) + OH - (aq)
25) Classify the following compounds as weak bases (W) or strong bases (S):
25)
ammonia
fluoride ion
sodium hydroxide
A) W W S
B) S S S
C) S W W
D) W S S
E) W S W
26) Classify the following compounds as weak bases (W) or strong bases (S):
26)
methylamine
carbonate ion
potassium hydroxide
A) W W S
B) S S S
C) S W W
D) W S S
E) W S W
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