Interactive Activity - Dissolution of an lonic Solid
The interaction between the solute and the solvent plays an important role in the dissolution process. The nature of substances determines their relative solubility. Substances with
similar intermolecular forces are observed to be soluble in one another. An ionic substance will be more soluble in a polar solvent than in a nonpolar solvent. Similarly, a nonpolar
compound will be soluble in a nonpolar solvent and is found to be insoluble in a polar solvent. To summarize all this in one statement, it is often said that "Like dissolves like."
Part B
NaCl is an ionic solid. The $Na^+$ and $Cl^-$ ions in NaCl are bonded through an electrostatic force of attraction commonly known as the ionic bond. Water is a polar solvent. The
oxygen atom, being more electronegative, attracts the electron cloud toward itself. As the electron cloud is pulled by the oxygen atom, it carries a partial negative charge, and the
hydrogen atoms carry a partial positive charge. This partial separation of charges in the water molecule makes it polar.
Which intermolecular forces contribute to the dissolution of NaCl in water?
Check all that apply.
ion-dipole forces
ion-ion forces
hydrogen bonding
dipole-dipole forces
