Share to: Solubility of Aluminum chloride   Aluminum chloride (AlCl3) is soluble in benzene (to a slight extent) and in water because the aluminum-chlorine bond is covalent, but st … rongly polarized, due to the relatively high electronegativity of the aluminum atom (1.5 to 1.61 on Pauling scale).aCl dissolves in water because it is an ionic compound. Because of  this, when the compound is broken down into ions, the polarity of  the water molecules attracts the brok … en down ions. This allows for  the Na+ and Cl-ions to dissolve in the water.