Post Utme Uniosun 2021 Chemistry Question 39

Practice objective / multiple choice question 39 from the 2021 Post Utme Uniosun Chemistry examination.

Post Utme Uniosun 2021 Chemistry Objective / Multiple Choice
Question 39 POST_UTME_UNIOSUN • 2021 • CHEMISTRY • objective

A 0.1 M solution of a base, NaOH, is titrated with 0.1 M HCl. The initial pH of the base solution is 12.5. If 20 mL of HCl is added, the pH of the solution is 2.5. What is the value of the dissociation cons\tant (Kb) of the base?

Answer Options

Correct Answer A. 1.0 x 10^\( -4 \)
B. 1.0 x 10^\( -5 \)
C. 1.0 x 10^\( -6 \)
D. 1.0 x 10^\( -7 \)
Correct Answer
A
Correct Option:
1.0 x 10^\( -4 \)

About This Question

This is Post Utme Uniosun 2021 Chemistry Question 39. It is one of the objective questions from the 2021 Post Utme Uniosun Chemistry examination.

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