If the pKa for formic acid is 3.75 the ratio of formate (A) to formic acid (HA) at pH 4.15 is 5:1. The pH of 1 liter of water to which is added 10 mL of 5.0 M HCI is 1.3. If an acid has a pka of 4.76 the Ka = 0.00001.

If the pKa for formic acid is 3.75 the ratio of formate (A) to formic acid (HA) at pH 4.15 is 5:1. The pH of 1 liter of water to which is added 10 mL of 5.0 M HCI is 1.3. If an acid has a pka of 4.76 the Ka = 0.00001.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter15: Complex Acid/base Systems

Section: Chapter Questions

Problem 15.16QAP

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