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The PH of a 0

Question 55

Multiple Choice

The pH of a 0.100 M solution of an aqueous weak acid (HA) is 3.20. What is Ka for the weak acid?


A) 4.0 10-6
B) 6.3 10-4
C) 7.2 10-5
D) 3.2
E) none of these

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