Q. For the reaction $A + 2B \rightarrow C,$ the rate of reaction at a given instant can be given by
A) $+ \frac{d\lbrack A\rbrack}{dt} = + \frac{1}{2}\frac{d\lbrack B\rbrack}{dt} = + \frac{d\lbrack C\rbrack}{dt}$
B) $\frac{d\lbrack A\rbrack}{dt} = - \frac{1}{2}\frac{d\lbrack B\rbrack}{dt} = - \frac{d\lbrack C\rbrack}{dt}$
C) $- \frac{d\lbrack A\rbrack}{dt} = - \frac{1}{2}\frac{d\lbrack B\rbrack}{dt} = + \frac{d\lbrack C\rbrack}{dt}$
D) $+ \frac{d\lbrack A\rbrack}{dt} = + \frac{1}{2}\frac{d\lbrack B\rbrack}{dt} = + \frac{d\lbrack C\rbrack}{dt}$
Explanation
(c)
For the reaction
$A + 2B \rightarrow C$
Rate of reaction at a given instant can be represented by
$rate = - \frac{d\lbrack A\rbrack}{dt} = - \frac{1}{2}\frac{d\lbrack B\rbrack}{dt} = + \frac{d\lbrack C\rbrack}{dt}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.