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A 250-ML Sample of 0

Question 131

Multiple Choice

A 25.0-mL sample of 0.150 M hydrocyanic acid is titrated with a 0.150 M NaOH solution.What is the pH after 13.3 mL of base is added? The Ka of hydrocyanic acid is 4.9 × 10-10.


A) 9.04
B) 1.34
C) 5.32
D) 9.37
E) 9.25

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