Q. For a first order reaction A$\rightarrow$Products, initial concentration of A is 0.1 M, which becomes 0.001 M after 5 minutes. Rate constant for the reaction in $min^{-1}$ is

A) 0.2303
B) 1.3818
C) 0.9212
D) 0.4606
Explanation

[Solution] $k = \frac{2.303}{t}\log\frac{[A]_0}{[A]} = \frac{2.303}{5}\log 100 = 0.9212\ min^{-1}$. Answer (3).

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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