The boiling point and separation of the petroleum oil

The boiling point

The boiling point is the temperature at which a matter begins to change from a liquid state to a gaseous state , The change of matter from liquid state to gaseous state is know as boiling , and the temperature at which the matter begings to boil is called the boiling point .

The boiling point of the water is 100 degree celsius and this means that the water begins to boil and change into the water vapour ( gas ) .

The pressure affects the boiling points , and the boiling points of the liquids vary widely at the normal atmospheric pressure , and because of this variation in the boiling points , two or more liquids can often be separated by a process called the  fractional distillation

At the boiling point , the atoms or the molecules of the liquid gain enough energy to change the liquid into the water vapour , then the boiling is rapidly evaporated .

Life application on boiling process

The separation of the petroleum oil depends on the difference between them in their boiling points , The separation of the components of oil can be done by heating the crude oil , then separating each substance at its boiling point .

The crude oil

Fractional distillation of crude oil

The boiling point is the temperature at which the vapour pressure of the substance is equal to the atmospheric pressure , The boiling point depends on the pressure , whereas the pressure increases , the boiling point increases .

The pressure pans are used for fast cooking as they raise the pressure so , the boiling point increases and the food is cooked faster .


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