The three true statements about the dissolution of KCl in water are:
a. KCl dissolves in water because it is an ionic compound and water is a polar solvent.
e. The positive potassium (K+) ions of KCl are pulled into solution by the slightly negative Oxygen atom on the water molecule.
f. The negative chloride ions (Cl-) of KCl are pulled into solution by the slightly positive Hydrogen atoms on the water molecule.
These statements correctly describe how the ionic compound KCl interacts with the polar water molecules during the dissolution process.