Post Utme Bowen University 2025 Chemistry Question 1

Practice objective / multiple choice question 1 from the 2025 Post Utme Bowen University Chemistry examination.

Post Utme Bowen University 2025 Chemistry Objective / Multiple Choice
Question 1 POST_UTME_BOWEN_UNIVERSITY • 2025 • CHEMISTRY • objective

Determine the rate cons\tant (k) for the first-order reaction: A → B, given that the initial concentration of A is 0.5 M and the concentration of A after 2 hours is 0.2 M. The rate cons\tant is related to the half-life \( t1/2 \) by the equation: ln(2) = kt1/2.

Answer Options

Correct Answer A. \( k = \frac{ln\( 2 \ \)}{t_{1/2}} )
B. \( k = \frac{ln\( 0.2 \ \)}{2} )
C. \( k = \frac{0.5 - 0.2}{2} \)
D. \( k = \frac{0.2}{0.5} \)
Correct Answer
A
Correct Option:
\( k = \frac{ln\( 2 \ \)}{t_{1/2}} )

About This Question

This is Post Utme Bowen University 2025 Chemistry Question 1. It is one of the objective questions from the 2025 Post Utme Bowen University Chemistry examination.

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