A titration of 35.0 mL of an unknown tribasic salt, Li A, requires 90.00mL of 0.250 M HCI to reach the 3rd equivalence point. The titrationdata is shown below:Vol of HCI (mL) 15.00 30.00 45.00 60.00pH6.79 4.8610.45 8.62What is the value of Kb, of A³¹?75.00 90.002.93 1.35

Answered: A titration of 35.0 mL of an unknown…

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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Question

A titration of 35.0 mL of an unknown tribasic salt, Li A, requires 90.00
mL of 0.250 M HCI to reach the 3rd equivalence point. The titration
data is shown below:
Vol of HCI (mL) 15.00 30.00 45.00 60.00
pH
6.79 4.86
10.45 8.62
What is the value of Kb, of A³¹?
75.00 90.00
2.93 1.35

Expert Solution

Step 1: Define pH

The question is based on the concept of pH of the solution. It is defined as a negative logarithm of hydrogen ion concentration present in a solution.

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