0.434-g sample of an unknown monoprotic acid was titrated with 0.120 M KOH and the resulting titration curve is shown here. Find pKa hi, i found the molar mass 0.434g/4.2x10-3 but dont know how to find pKa thank you!

0.434-g sample of an unknown monoprotic acid was titrated with 0.120 M KOH and the resulting titration curve is shown here. Find pKa hi, i found the molar mass 0.434g/4.2x10-3 but dont know how to find pKa thank you!

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter8: Solutions

Section: Chapter Questions

Problem 8.42EP

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

0.434-g sample of an unknown monoprotic acid was titrated with 0.120 M KOH and the resulting titration curve is shown here.

Find pKa

hi, i found the molar mass 0.434g/4.2x10-3 but dont know how to find pKa

thank you!

pH
14
12
10
8
4
2
0
20 40 60 80 100
Volume of base added (mL)
0

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