3. Complete neutralization of 10 mL of phosphoric acid solution by NaOH 0.1 N in the presence of phenol phthalein until the appearance of purple color (pHf= 9) 11 mL of NaOH is consumed. (a) What is the concentration of phosphoric acid? (b) Calculate the indicator error. pKal = 2.1 pKa2 = 7.2 pKa3 = 12.4

3. Complete neutralization of 10 mL of phosphoric acid solution by NaOH 0.1 N in the presence of phenol phthalein until the appearance of purple color (pHf= 9) 11 mL of NaOH is consumed. (a) What is the concentration of phosphoric acid? (b) Calculate the indicator error. pKal = 2.1 pKa2 = 7.2 pKa3 = 12.4

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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