Impurities decrease the boiling point of a liquid, hence the boiling point of the salt solution will be less than that of pure water.
Explanation:
If Denver wants to know if adding salt to water will reduce the boiling point of water, Denver needs to set up the apparatus for the inquiry as follows;
A boiling tube
A Bunsen burner with wire gauze
A thermometer
A test tube holder
The thermometer is placed inside the boiling tube while the salt solution his allowed to boil. The boiling point is observed using the thermometer. Impurities decrease the boiling point of a liquid, hence the boiling point of the salt solution will be less than that of pure water.
In order to follow the steps of inquiry Denver should add some salt to water taken in vessel and heat it. Once the water comes to a boil, Denver should insert a thermometer into the boiling water and measure the temperature of it. Pure water boils at 100°C. Denver will have to note if the salt water boils at a higher or lower temperature than 100°C.
