Question

Water has a boiling point of 100°C. After salt is dissolved in water, the boiling point of the resulting solution is _____.

Answer 1

Step-by-step explanation:

When a salt or any other substance is added to water then there will occur an increase in the boiling point of water. This is known as elevation in boiling point.

This is because solute particles get deposited on the surface of water due to which water vapors are not able to escape out into the atmosphere. Hence, we need to provide more heat energy to the solution.

As a result, vapor pressure of the solution will not become equal to the atmospheric pressure at
`100^(o)C` but at temperature greater than
`100^(o)C` the vapor pressure of solution will become equal to the atmospheric pressure.

Thus, we can conclude that after salt is dissolved in water, the boiling point of the resulting solution is more than
`100^(o)C`.

Answer 2

Step-by-step explanation:

Boiling point of pure water is
`100^(o)C` and when we dissolve salt in water the the boiling point will be greater than
`100^(o)C`.

This is because an impurity has been added to water due to which enough vapors will not be generated at
`100^(o)C`. Hence, when temperature increases above
`100^(o)C` then vapors are able to form.

Hence, the solution is able to evaporate above
`100^(o)C`.

Thus, we can conclude that water has a boiling point of 100°C. After salt is dissolved in water, the boiling point of the resulting solution is greater than
`100^(o)C`.