Multiple Choice
A 0.22 M aqueous solution of the weak acid HA at 25.0 °C has a pH of 4.15.The value of Ka for HA is ________.
A) 7.1 × 10-5
B) 3.2 × 10-4
C) 2.2 × 10-1
D) 2.3 × 10-8
E) 3.2 × 104
Correct Answer:

Verified
Correct Answer:
Verified
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