Post Utme Lasu 2025 Chemistry Question 11

Practice objective / multiple choice question 11 from the 2025 Post Utme Lasu Chemistry examination.

Post Utme Lasu 2025 Chemistry Objective / Multiple Choice

Question 11 POST_UTME_LASU • 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 rate cons\tant (k) if the pre-exponential factor (A) is 1.0 x 10^10 s^-1?

A. 1.0 x 10^5 s^-1

B. 1.0 x 10^6 s^-1

C. 1.0 x 10^7 s^-1

Correct Answer D. 1.0 x 10^8 s^-1

Correct Answer

Correct Option:

1.0 x 10^8 s^-1

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

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