Problem $3$

A liquid$-$phase reaction $A+B=C$ is conducted in a $50-L$ batch reactor. The reaction is firstorder with respect to each reactant. Determine the time required for $90\%$ conversion of A$.C_{A0}$ and $C_{B0}$ are $0\mathrm{.}50mo\frac{l}{L}$ and $0\mathrm{.}75mo\frac{l}{L},$ respectively