College Chemistry Ii Phs 1035 Practice Exam 3 With Answer Key Page 6
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3930) Using the data in the table, which of the conjugate bases below is the weakest base?
30)
Acid
K a
HOAc
1.8 × 10 -5
HCHO 2 1.8 × 10 -4
3.0 × 10 -8
HClO
HF
6.8 × 10 -4
A) OAc -
B) CHO 2 -
C) ClO -
D) F -
E) OAc - and CHO 2 -
31) Using the data in the table, which of the conjugate acids below is the strongest acid?
31)
K b
Base
ClO -
3.3 × 10 -7
CO 3 -2
1.8 × 10 -4
1.8 × 10 -7
HS -
NH 2 CH 3 4.4 × 10 -4
A) HClO
B) HCO 3 -
C) H 2 S
D) NH 3 CH 3 +
E) H 2 S and HClO
32) Using the data in the table, which of the conjugate acids below is the weakest acid?
32)
K b
Base
ClO -
3.3 × 10 -7
CO 3 -2
1.8 × 10 -4
1.8 × 10 -7
HS -
NH 2 CH 3 4.4 × 10 -4
A) HClO
B) HCO 3 -
C) H 2 S
D) NH 3 CH 3 +
E) H 2 S and HClO
6
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