The pH of a 0.15 M aqueous solution of NaZ (the sodium salt of HZ) is 10.7. What is the Ka for HZ?
A) 1.6 × 10-6
B) 6.0 × 10-9
C) 8.9 × 10-4
D) 1.3 × 10-12
E) 3.3 × 10-8
Correct Answer:
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