Post Utme Unilag 2019 Chemistry Question 7

Practice objective / multiple choice question 7 from the 2019 Post Utme Unilag Chemistry examination.

Post Utme Unilag 2019 Chemistry Objective / Multiple Choice

Question 7 POST_UTME_UNILAG • 2019 • CHEMISTRY • objective

A 25 cm3 sample of 0.1 M HCl is titrated with 0.1 M NaOH. Calculate the pH of the solution after 20 cm3 of NaOH has been added.

Answer Options

Correct Answer A. \( pH = \frac{1}{2} \log \frac{[HCl]_0}{[HCl]_t} \)

B. \( pH = \frac{1}{2} \log \frac{[HCl]_t}{[HCl]_0} \)

C. \( pH = \frac{1}{2} \log \frac{[HCl]_0}{[HCl]_t} + \frac{1}{2} \log \frac{[NaOH]_0}{[NaOH]_t} \)

D. \( pH = \frac{1}{2} \log \frac{[HCl]_t}{[HCl]_0} + \frac{1}{2} \log \frac{[NaOH]_t}{[NaOH]_0} \)

Correct Answer

Correct Option:

\( pH = \frac{1}{2} \log \frac{[HCl]_0}{[HCl]_t} \)

About This Question

This is Post Utme Unilag 2019 Chemistry Question 7. It is one of the objective questions from the 2019 Post Utme Unilag Chemistry examination.

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