In a chemical reaction, represented by as shown in the bellow figure, it is observed that the (i) Rate of reaction increases by a factor of 4 on doubling the concentration of the reactant. (ii) Rate of reaction increases by a factor of 9 on trebling the concentration of the reactant. Then the rate of the reaction is proportional to(where, CA = concentration of the reactant)_____________________?
Correct answer: C
Explanation
From (i), Rate $\propto [A]^2$. From (ii), Rate $\propto [A]^3$. The highest order observed is 3, so the rate is proportional to $[A]^3$.