Solubility Practice Test

A student adds magnesium sulfate ($\mathrm{MgSO_4}$), an ionic compound, to water. Water is highly polar and can form strong ion–dipole interactions. Is $\mathrm{MgSO_4}$ likely to be soluble in water, and why?

Carbon tetrachloride ($\mathrm{CCl_4}$) is a nonpolar molecular liquid (London dispersion forces). A student attempts to dissolve acetone ($\mathrm{(CH_3)_2CO}$), a polar molecule with a strong dipole (but no O–H bond), in $\mathrm{CCl_4}$. Is acetone likely to be highly soluble in $\mathrm{CCl_4}$, and why?