(Solved): Gypsum (CaSO4) can be used as a water treatment additive to reduce the level of silt and mud bui ...

Gypsum $\left({\mathrm{CaSO}}_4\right)$ can be used as a water treatment additive to reduce the level of silt and mud build up by flocculating the clay. In a pilot experiment, $1000\mathrm{g}$ of gypsum is added to $1{\mathrm{m}}^3$ pure water. Determine the amount of sulfate $\left({\mathrm{SO}}_4{}^{2?}\right)$, in $\mathrm{mg}/\mathrm{L}$, dissolved in the water and the amount of gypsum precipitate that remains, in $\mathrm{mg}/\mathrm{L}$, undissolved. The solubility constant of ${\mathrm{CaSO}}_4$ in water at $25^{?}\mathrm{C}$ is given as $\mathrm{K}=1.0\times 10^{?4.58}$. (15)