Question

Some amount of common salt is dissolved in a beaker full of water. How does this affect the boiling point of water?

Answer 1

The boiling point of water is the temperature at which liquid water is converted into water vapour at 1 atmospheric pressure. When impurities like salt are added to water, the boiling of water increases. Because the impurities decrease the water molecules available for vaporisation during boiling, a greater amount of heat energy is required to make the same amount of impure water to vapourise than the heat is required to make the same amount of pure water.