Q. The rate constant of the reaction A → B is $0.6 \times 10^{-3}$ mole per second. If the concentration of A is 5 M, then concentration of B after 20 minutes is :-
A) 0.36 M
B) 0.72 M
C) 1.08 M
D) 3.60 M
Explanation
[Solution] The units show a zero-order reaction: x = kt = $0.6 \times 10^{-3} \times 1200 = 0.72$ M. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.