Calculate the solubility in $\mathrm{mol} {\mathrm{dm}}^{-3}$ of zinc sulfide, $\mathrm{ZnS}$. $\left({\mathrm{K}}_{\mathrm{sp}} =1.6 \mathrm{x} {10}^{-23} {\mathrm{mol}}^2 {\mathrm{dm}}^{-6}\right)$

Calcium sulfate is a sparingly soluble salt that can be made by mixing solutions containing calcium and sulfate ions. A $0.00100 \mathrm{mol} {\mathrm{dm}}^{-3}$ solution of aqueous calcium chloride, ${\mathrm{CaCl}}_2$ is mixed with an equal volume of $0.00100 \mathrm{mol} {\mathrm{dm}}^{-3}$ solution of aqueous sodium sulfate, ${\mathrm{Na}}_2{\mathrm{SO}}_4$.

Calculate the concentration of calcium and sulfate ions when equal volumes of these solutions of calcium chloride and sodium sulfate are mixed.

Calcium sulfate is a sparingly soluble salt that can be made by mixing solutions containing calcium and sulfate ions. A $0.00100 \mathrm{mol} {\mathrm{dm}}^{-3}$ solution of aqueous calcium chloride, ${\mathrm{CaCl}}_2$ is mixed with an equal volume of $0.00100 \mathrm{mol} {\mathrm{dm}}^{-3}$ solution of aqueous sodium sulfate, ${\mathrm{Na}}_2{\mathrm{SO}}_4$.

Will a precipitate of calcium sulfate form? (${\mathrm{K}}_{\mathrm{sp}}$ of calcium sulfate = $2.0 \mathrm{x} {10}^{-5} {\mathrm{mol}}^2 {\mathrm{dm}}^{-3}$)

Write general expressions for the term:

$\mathrm{pH}$

Write general expressions for the term:

${\mathrm{K}}_{\mathrm{w}}$

Write general expressions for the term:

${\mathrm{K}}_{\mathrm{a}}$