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A 500 ML Sample of 0

Question 10

Multiple Choice

A 50.0 mL sample of 0.155 M HNO2(aq) is titrated with 0.100 M NaOH(aq) .What is the pH of a solution after the addition of 25.0 mL of NaOH? (Ka of HNO2 = 4.5 × 10-4)


A) 3.02
B) 3.22
C) 3.67
D) 3.86
E) 4.05

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