$12\mathrm{.}6$ A new pesticide, MCTP$,$ is added to a closed ecosystem containing air,

water, and fish, all at $25C.$ Given the information below, compute the

approximate distribution of MCTP in the system if:

$($a$)0\mathrm{.}1$mol of MCTP is added to the system.

$($b$)75\mathrm{.}0$mol of MCTP is added to the system.

$($c$)$ after removing some of the MCTP from the system in part $($b$),$

the equilibrium concentration of MCTP in the ecosystem air is

$5{10}^{-4}mo\frac{l}{m^3}.$

Estimated phase volumes:

Ecosystem $=200m^3$

Water $=18m^3$

Fish $=0\mathrm{.}001m^3$

MCTP properties:

$K_{OW}=3200$

$K_B=\frac{K_{OW}}{0\mathrm{.}7}$

Molecular weight $=150\frac{g}{m}ol$

Aqueous solubility $=200m\frac{g}{L}$