4. A buffer solution is prepared by dissolving 2.00 g each of benzoic acid, C6H5COOH (122.1 g/mol), and sodium benzoate, NaC6H5CO0 (144.1 g/mol), in 750.0 mL of water. Assume that the solution's volume is 750.0 mL. Ka of benzoic acid = 6.3 x 10-5 Calculate the molarity of C6H5COOH. Calculate the molarity of NaC6H5COO. Write the Henderson Hasselbalch equation for the above system with known values plugged in. Calculate the pH of this buffer.

4. A buffer solution is prepared by dissolving 2.00 g each of benzoic acid, C6H5COOH (122.1 g/mol), and sodium benzoate, NaC6H5CO0 (144.1 g/mol), in 750.0 mL of water. Assume that the solution's volume is 750.0 mL. Ka of benzoic acid = 6.3 x 10-5 Calculate the molarity of C6H5COOH. Calculate the molarity of NaC6H5COO. Write the Henderson Hasselbalch equation for the above system with known values plugged in. Calculate the pH of this buffer.

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 31QRT

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