CONCEPTUAL

The structure of a water solution of KNO_{3}, containing equal numbers of K^{+} and NO_{3}^{-} ions, may be represented as(H_{2}O molecules are not shown.) Construct a similar beaker to show the structure of a water solution of potassium sulfate, K_{2}SO_{4}. Use to represent a sulfur atom.

STRATEGY

Once you deduce the formula of the ionic compound, it’s all downhill. Remember, though, that you have to show the relative numbers of cations and anions.