Q. The term $\frac{- dc}{dt}$ in a rate equation refers to
A) The decrease in concentration of the reactant with time
B) The concentration of the reactant
C) The change in concentration of the reactant
D) The velocity constant of the reaction
Explanation
(a)
$\frac{dc}{dt}$ represent the change in concentration of reactant with time. As, in a reaction, concentration of reactant always decrease with time hence, rate of reaction is represented as
$\frac{- dc}{dt}.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.