A student wishes to make a buffer that has a pH of 4.65.  The student has HNO2 and NaNO2.  Nitrous Acid (HNO2) has a pKa of 3.40   Explain why the combination of these two compounds creates a buffer system.  What happens when ACID is added to the system? What happens when BASE is added to the system?

Introductory Chemistry For Today
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Chapter9: Acids, Bases, And Salts
Section: Chapter Questions
Problem 9.121E
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A student wishes to make a buffer that has a pH of 4.65.  The student has HNO2 and NaNO2.  Nitrous Acid (HNO2) has a pKa of 3.40

 

Explain why the combination of these two compounds creates a buffer system.  What happens when ACID is added to the system? What happens when BASE is added to the system?

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