Post Utme Al Hikmah University 2025 Chemistry Question 11

Practice objective / multiple choice question 11 from the 2025 Post Utme Al Hikmah University Chemistry examination.

Post Utme Al Hikmah University 2025 Chemistry Objective / Multiple Choice
Question 11 POST_UTME_AL-HIKMAH_UNIVERSITY • 2025 • CHEMISTRY • objective

The rate cons\tant (k) for a first-order reaction is given by the equation: k = Ae^\( -Ea/RT \). If the activation energy (Ea) 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. 1.45 x 10^10 s^\( -1 \)
B. 1.45 x 10^12 s^\( -1 \)
C. 1.45 x 10^14 s^\( -1 \)
D. 1.45 x 10^16 s^\( -1 \)
Correct Answer
A
Correct Option:
1.45 x 10^10 s^\( -1 \)

About This Question

This is Post Utme Al Hikmah University 2025 Chemistry Question 11. It is one of the objective questions from the 2025 Post Utme Al Hikmah University Chemistry examination.

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