Solved: A buffer system used to maintain solution pH

Chapter 13, Problem 109QP

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Problem 109QP

A buffer system used to maintain solution pH values around 12 to 13 is prepared by adding similar concentrations of Na2HPO4 and Na3PO4 to water.

(a) Write a balanced equation showing the acid and conjugate base in equilibrium. Omit spectator ions.

(b) Describe how this buffer system prevents large pH changes when an acid is added.

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