Post Utme Summit University 2025 Chemistry Question 21

Practice objective / multiple choice question 21 from the 2025 Post Utme Summit University Chemistry examination.

Post Utme Summit University 2025 Chemistry Objective / Multiple Choice
Question 21 POST_UTME_SUMMIT_UNIVERSITY • 2025 • CHEMISTRY • objective

The rate cons\tant of a first-order reaction is given by \( k = Ae^{-E_a/RT} \). If the activation energy \( E_a \) is 100 kJ/mol, the gas cons\tant ( R ) is 8.314 J/(mol·K), and the temperature ( T ) is 300 K, what is the value of the pre-exponential factor ( A ) if the rate cons\tant ( k ) is 0.05 s\( ^{-1} \)?

Answer Options

Correct Answer A. \( 1.23 \times 10^{10} \)
B. \( 1.23 \times 10^{11} \)
C. \( 1.23 \times 10^{12} \)
D. \( 1.23 \times 10^{13} \)
Correct Answer
A
Correct Option:
\( 1.23 \times 10^{10} \)

About This Question

This is Post Utme Summit University 2025 Chemistry Question 21. It is one of the objective questions from the 2025 Post Utme Summit University Chemistry examination.

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