A is solution is prepared by mixing 25 mL of 0.1M HCHO, with 25 mL of 0.2M NACHO2. The pH of the solution is 4.0. What is the pKa of HCHO2?3.74.33.54.5O 4.0

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A is solution is prepared by mixing 25 mL of 0.1 M HCHO2 with 25 mL of 0.2 M NACHO2. The pH of the solution is 4.0. What is the pKa of HCHO2? 3.7 4.3 3.5 O 4.5 4.0

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter15: Complex Ion And Precipitation Equilibria

Section: Chapter Questions

Problem 15QAP: A solution with a pH of 9.22 is prepared by adding water to 0.413 mol of KX to make 2.00 L of...

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Question

A is solution is prepared by mixing 25 mL of 0.1M HCHO, with 25 mL of 0.2
M NACHO2. The pH of the solution is 4.0. What is the pKa of HCHO2?
3.7
4.3
3.5
4.5
O 4.0

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