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A 100 ml of 0.100 M phosphate buffer solution with a pH of 8.10 is to be prepared by adding 1.00 M HCl(aq) to 20.0 mL of 0.500 M Na;PO4(ag) in a 100-mL volumetric flask, and diluting the solution with water to the 100-mL mark. How much of 1.00 M HCl(eg) is required to prepare the buffer solution? The pKa's for the three ionization steps of H3PO4 are: pKa1 = 2.16, pKa2 = 7.21, pKa3 = 12.32 O 1.14 mL O 11.1 mL O 6.23 mL O 7.84 mL

A 100 ml of 0.100 M phosphate buffer solution with a pH of 8.10 is to be prepared by adding 1.00 M HCl(aq) to 20.0 mL of 0.500 M Na;PO4(ag) in a 100-mL volumetric flask, and diluting the solution with water to the 100-mL mark. How much of 1.00 M HCl(eg) is required to prepare the buffer solution? The pKa's for the three ionization steps of H3PO4 are: pKa1 = 2.16, pKa2 = 7.21, pKa3 = 12.32 O 1.14 mL O 11.1 mL O 6.23 mL O 7.84 mL

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 49P
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A 100 mL of 0.100M phosphate buffer solution with a pH of 8.10 is to be prepared by adding 1.00 M HCl(ag) to 20.0 mL of 0.500 M NazPO4(ag) in a 100-mL volumetric flask, and diluting the solution with water to the 100-ml mark. How much of 1.00 M HCl(aq) is required to prepare the buffer solution? The pK's for the three ionization steps of H3PO4 are: pKa1 = 2.16, pKa2 = 7.21, pKa3 = 12.32 O 1.14 mL O 11.1 mL O 6.23 mL O 7.84 mL
Transcribed Image Text:A 100 mL of 0.100M phosphate buffer solution with a pH of 8.10 is to be prepared by adding 1.00 M HCl(ag) to 20.0 mL of 0.500 M NazPO4(ag) in a 100-mL volumetric flask, and diluting the solution with water to the 100-ml mark. How much of 1.00 M HCl(aq) is required to prepare the buffer solution? The pK's for the three ionization steps of H3PO4 are: pKa1 = 2.16, pKa2 = 7.21, pKa3 = 12.32 O 1.14 mL O 11.1 mL O 6.23 mL O 7.84 mL
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