An irreversible, homogeneous reaction $A{\rightarrow}$ products, has the rate expression:
Rate = $\frac{2C_{A}^{2}+0.1C_{A}}{1+50C_{A}}$, where $C_{A}$ is the concentration of $A$.
$C_{A}$ varies in the range $0.5-50$ mol/$m^{3}$.
For very high concentration of $A$, the reaction order tends to :
- $0$
- $1$
- $1.5$
- $2$