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What Is the PH of a Buffer Solution Made by Mixing

Question 103

Multiple Choice

What is the pH of a buffer solution made by mixing 50.0 mL of 0.100 M potassium hydrogen phthalate with 13.6 mL of 0.100 M NaOH and diluting the mixture to 100.0 mL with water? The Ka2 for hydrogen phthalate is 3.1 × 10-6.


A) 3.25
B) 5.08
C) 5.51
D) 5.94

Correct Answer:

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