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A 5000-ML Solution of 0

Question 72

Multiple Choice

A 50.00-mL solution of 0.10 M HNO2 is titrated with a 0.10 M KOH solution. After 25.00 mL of the KOH solution is added, what is the pH in the titration flask? [Ka(HNO2) = 4.5 × 10-4]


A) 2.17
B) 3.35
C) 2.41
D) 1.48
E) 7.00

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