A buffer solution is a mixture of a weak acid and its conjugate base, both in considerable concentration. This module compares the effect on the solution pH when some 0.1 M HCl is added to pure water and to a buffer solution containing H2PO4- and HPO42-. When the HCl solution is added to the pure water, by how much does the pH decrease?

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 25QRT: A buffer solution is prepared by adding 0.125 mol ammonium chloride to 500. mL of 0.500-M aqueous...
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A buffer solution is a mixture of a weak acid and its conjugate base, both in considerable concentration. This module compares the effect on the solution pH when some 0.1 M HCl is added to pure water and to a buffer solution containing H2PO4- and HPO42-. When the HCl solution is added to the pure water, by how much does the pH decrease?

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