Compound A was slowly and continuously mixed thoroughly into a tank filled with water $.$over $30$ minutes

Compound A dissolves quickly and hydrolyzes to compound B$.$ Compound B slowly decomposes into $C.$ Tank volume is $3m$

At the end of half an hour, the B concentration reaches $)=(1\mathrm{.}5h$

$ra=-k1$

$rr=k1-k2CR$

$rs=k2cR$

a$)$ What is the maximum concentration of $B$ and at what time does maximum occur

b$)$ What is the concentration of $C$ in the tank after $1$ hour