Q. For the reaction $A \rightarrow B,$ when concentration of $A$ is made 1.5 times, the rate of reaction becomes 1.837 times. The order of reaction is
A) 1
B) 1.5
C) 2
D) 2.5
Explanation
(b)
$r = k\lbrack A\rbrack^{\alpha} = ka^{\alpha}$
$1.837\ r = k(1.5a)^{\alpha}$
Dividing, $1.837 = (1.5)^{\alpha}$
$\alpha = 1.5$
Hence, order of reaction $= 1.5$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.