Q. The rate constant of a first order reaction is $3 \times 10^{- 6}$ per second and initial concentration is 0.10 M. Then the initial rate of reaction is
A) $3 \times 10^{- 6}ms^{- 1}$
B) $3 \times 10^{- 8}ms^{- 1}$
C) $3 \times 10^{- 7}ms^{- 1}$
D) $3 \times 10^{- 9}ms^{- 1}$
Explanation
(c)
For first order reaction, rate=k[concentration]
$k = 3 \times 10^{- 6}$per second, concentration=0.1M
Rate=$3 \times 10^{- 6} \times 0.1$
$= 3 \times 10^{- 7}ms^{- 1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.