A buffer is prepared by mixing 0.15 M NazHPO4 and 0.10 M NaH, PO4. K, for H3PO4 = 7.5 103 %3D Ka for H,PO, = 6.2 x 10-8 K, for HPO,2 = 4.2 x 10 13 1) What is the pH of this buffer? 2) Write the chemical reaction that occurs when NaOH is added to thic huffe

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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.141QP: Ka for formic acid is 1.7 104 at 25C. A buffer is made by mixing 529 mL of 0.465 M formic acid,...
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A buffer is prepared by mixing 0.15 M Na HPO4 and 0.10 M NaH, PO4.
Kg for H3PO4 = 7.5 103
K, for H,PO, = 6.2 x 10 8
K, for HPO,2- = 4.2 x 10°13
1) What is the pH of this buffer?
2) Write the chemical reaction that occurs when NaOH is added to this buffer.
Transcribed Image Text:A buffer is prepared by mixing 0.15 M Na HPO4 and 0.10 M NaH, PO4. Kg for H3PO4 = 7.5 103 K, for H,PO, = 6.2 x 10 8 K, for HPO,2- = 4.2 x 10°13 1) What is the pH of this buffer? 2) Write the chemical reaction that occurs when NaOH is added to this buffer.
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