Question

A reaction in which reactants $\left(R\right)$ are converted into products $\left(P\right)$ follows seconds order kinetics. If concentration of $R$ is increased by four times, what will be the increase in the rate of formation of $P$?

• A. $9times$
• B. $4times$
• C. $16times$
• D. $8times$

Answer 1

The correct option is C $16times$

For the reaction:

$R\to P$

For a second order reaction, $rate=k[R{]}^2$

If conc. of $R$ is increased by four times, $rate=k[4R{]}^2=16k[R{]}^2$

Hence, the rate of formation of $P$ increases by $16$ times.