Post Utme Uniosun 2021 Chemistry Question 36

Practice objective / multiple choice question 36 from the 2021 Post Utme Uniosun Chemistry examination.

Post Utme Uniosun 2021 Chemistry Objective / Multiple Choice
Question 36 POST_UTME_UNIOSUN • 2021 • CHEMISTRY • objective

A 0.1 M solution of a weak acid, HA, is titrated with 0.1 M NaOH. The initial pH of the acid solution is 3.5. If 20 mL of NaOH is added, the pH of the solution is 4.5. What is the value of the dissociation cons\tant (Ka) of the acid?

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 36. It is one of the objective questions from the 2021 Post Utme Uniosun Chemistry examination.

View More Post Utme Uniosun 2021 Chemistry Questions More Post Utme Uniosun Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support