You are asked to prepare a 200.0 mL buffer solution of pH 8.52 from the following hypohalous acids:Hypobromous acid, HBroHypochlorous acid, HCIOHypoiodous acid, HIO(Ka = 2.0 x 10)(K, = 3.0 x 10)(Ka = 2.0 x 10-11)The available reagents are 5.0 M each of the acids and solids NaCIO (74.44 g/mol), NaBro (118.9g/mol) and Nalo (165.9 g/mol).a. What would be the concentration of the salt if the required concentration of the acidcomponent is 1.00 M?b. How much of the acid will you use?c. How much of the salt is needed?

We'll first calculate the pKa of each acid.

You are asked to prepare a 200.0 mL buffer solution of pH 8.52 from the following hypohalous acids: Hypobromous acid, HBrO (K, = 2.0 x 10-) Hypochlorous acid, HCIO Hypoiodous acid, HIO (Ka = 3.0 x 10) (Ka = 2.0 x 10-11) The available reagents are 5.0 M each of the acids and solids NaClO (74.44 g/mol), NaBro (118.9 g/mol) and Nalo (165.9 g/mol). a. What would be the concentration of the salt if the required concentration of the acid component is 1.00 M? b. How much of the acid will you use? c. How much of the salt is needed?

You are asked to prepare a 200.0 mL buffer solution of pH 8.52 from the following hypohalous acids: Hypobromous acid, HBrO (K, = 2.0 x 10-) Hypochlorous acid, HCIO Hypoiodous acid, HIO (Ka = 3.0 x 10) (Ka = 2.0 x 10-11) The available reagents are 5.0 M each of the acids and solids NaClO (74.44 g/mol), NaBro (118.9 g/mol) and Nalo (165.9 g/mol). a. What would be the concentration of the salt if the required concentration of the acid component is 1.00 M? b. How much of the acid will you use? c. How much of the salt is needed?

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 99AP

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