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If sodium chloride (NaCl) is dissolved in water, how will the vapor pressure of the water be affected?

A. The vapor pressure will be raised, making it more easier to boil.
B. The vapor pressure will be raised, making it more difficult to boil.
C. The vapor pressure will be lowered, making it easier to boil.
D. The vapor pressure will be lowered, making it more difficult to boil.


Sagot :

D. The vapor pressure will be lowered, making it more difficult to boil.

Adding salt to water makes increases the boiling point, because there are more intermolecular forces to overcome since some of the water molecules interact with the salt ions.

The vapor pressure will be lowered, making it more difficult to boil If sodium chloride (NaCl) is dissolved in water. Hence, option D is correct.

What is vapor pressure?

It can be defined as the pressure exerted by a vapor with its condensed phases in a closed system at a given temperature show the equilibrium vapor is a well-known measure of a liquid evaporation rate.

The vapor pressure of a liquid is the point at which equilibrium pressure is reached in a closed container. The  molecules leaving the liquid and going into the gaseous phase and molecules leaving the gaseous phase and entering the liquid phase.

It is measured in the standard units of pressure the international system of units. Pressure as a derived unit with the dimension of force per area and designate the Pascal (Pa) as its standard unit.

When common salt is dissolved in water boiling point of a solution increases the boiling point of a substance is the temperature at which it will be lowered, making it more difficult to boil If sodium chloride (NaCl) is dissolved in water. Hence, option D is correct.

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