(Solved): The following preparatory questions should be answered before coming to lab. They are inten ...

The following preparatory questions should be answered before coming to lab. They are intended to introduce you to several ideas that are important to aspects of the experiment. You must turn in your work to your instructor before you will be allowed to begin the experiment. 1. Magnesium carbonate, $${\mathrm{MgCO}}_3$$ is a salt of low solubility. When placed in water, it dissolves until an equilibrium is reached: $${\mathrm{MgCO}}_3(\mathrm{s})?{\mathrm{Mg}}^{2+}(\mathrm{aq})+{\mathrm{CO}}_3^{2?}(\mathrm{aq})$$ a) Write an expression for the solubility product constant, $${\mathrm{K}}_{\mathrm{sp}}$$, of Magnesium carbonate.. b) If the solubility product constant of $${\mathrm{MgCO}}_3$$ is $$6.82\times 10^{?6}$$, what is the solubility of the salt? 2. The solubility of barium fluoride, BaF $${\mathrm{z}}_2$$ in water is $$7.5\times 10^{?3}\mathrm{M}$$. Calculate the solubility product constant of this salt.