Summary:
- The addition of ions creates significant changes in properties of solutions.
- Water molecules surround the ions and are somewhat bound to them.
- Colligative properties are affected because the solvent properties are no longer the same as those in the pure solvent.
- This must be taken into account when calculating the freezing and boiling points of electrolyte solutions.
- Calcium chloride dissociates into three ions according to the equation: values of the freezing point elevation and the boiling point elevation for a solution of CaCl2 will be three times greater than they would be for an equal molality.