Final answer:
The normal boiling point of a compound is the boiling point of the pure solvent plus any elevation caused by dissolved nonvolatile solutes. For water with added antifreeze, its normal boiling point of 100°C will increase by the boiling point elevation calculated.
Step-by-step explanation:
To determine the normal boiling point of a compound, we must consider the boiling point of the solvent and any changes caused by solutes. In the case of water, the accepted value for the normal boiling point is 100°C. When a nonvolatile solute is added, like in the example of a 0.33 m solution of a nonvolatile solute in benzene, the boiling point elevation must be calculated based on the solute's molality and the solvent's properties.
For a solution of an antifreeze described in Example 11.3 with ideal behavior, the boiling point change (AT) should be added to the normal boiling point of water.
Therefore, if water (the solvent) has a boiling point of 100°C and the antifreeze solution causes a certain boiling point elevation, that value must be added to 100°C to get the new boiling point.