Which statement explains why oxygen can be separated from nitrogen by the fractional distillation of liquid air?

Oxygen is more dense than nitrogen

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Oxygen is more reactive than nitrogen

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The two elements have different boiling points

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The two gases are in different groups of the Periodic Table

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Solution

The correct option is C The two elements have different boiling points
Fractional distillation is a process of separation of mixtures based on the difference in their boiling points.
so, oxygen and nitrogen can be separated by fractional distillation because they have different boiling points.

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Fractional distillation is the separation of a mixture into its component parts or fractions. This is the process of separation of chemical compounds due to difference in their boiling point. The mixture is heated to a temperature at which one or more fractions (component parts) will vaporize. It is a special type of distillation.

Air is a homogeneous mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases such as helium, krypton, nitrogen dioxide etc.

Consider three gases oxygen, nitrogen and argon whose boiling points are -183, -196, -186 degree celsius, they are to be separated from air using fractional distillation.

Air is compressed by increasing the pressure and then cooled by decreasing the temperature in order to get liquid air. This liquid air is allowed to warm-up slowly in a fractional distillation column, where gases get separated at different heights depending upon their boiling points. As the height of tower increases the temperature increases.

Statement: The temperature is ____ at the base of the fractional distillation column.

Q. Assertion :A mixture of two different liquids can be separated via distillation. Reason: Different liquids have different boiling points.

Q. Assertion :Simple distillation can help in separating a mixture of propan-1-ol (boiling point

97^{o} C

) and propanone (boiling point

56^{o} C

) Reason: Liquids with a difference of more than

20^{o} C

in their boiling points can be separated by simple distillation.

Fractional distillation is the separation of a mixture into its component or fractions. This process is based on difference in boiling point of the components in the mixture. This is a special type of distillation.

Air is a homogeneous mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases such as helium, krypton, nitrogen dioxide etc.

Consider three gases oxygen, nitrogen and argon whose boiling points are: -183, -196, -186 degree celsius. They are to be separated from air using fractional distillation.

Air is compressed by increasing pressure and is then cooled by decreasing the temperature to form liquid air. This liquid air is allowed to warm-up slowly in a fractional distillation column, where gases get separated at different heights depending upon their boiling points. As the height of tower increases the temperature increases.

Among the three gases, which gas is collected at last?

Fractional Distillation is the separation of a mixture into its component parts or fractions. This is the process of separation of chemical compounds by their boiling point, the mixture is heated to a temperature at which one or more fractions (component parts) will vaporize. Generally the component parts boil at less than 25°C from each other under a pressure of one atmosphere. It is a special type of distillation.

Air is a homogeneous mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases like Helium, Krypton, Nitrogen dioxide etc.

Consider three gases Oxygen, Nitrogen and Argon whose boiling points are -183, -196, -186 degree celsius, that are to be separated from air using Fractional Distillation.

The air is compressed by increasing the pressure and is then cooled by decreasing the temperature to get liquid air. This liquid air is allowed to warm-up slowly in a fractional distillation column, where gases get separated at different heights depending upon their boiling points. As the height of tower increases the temperature increases.

State True of False:

Statement: The temperature is low at the base of the Fractional Distillation.

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Which statement explains why oxygen can be separated from nitrogen by the fractional distillation of liquid air?

The correct option is C The two elements have different boiling pointsFractional distillation is a process of separation of mixtures based on the difference in their boiling points.so, oxygen and nitrogen can be separated by fractional distillation because they have different boiling points.

The correct option is C The two elements have different boiling points
Fractional distillation is a process of separation of mixtures based on the difference in their boiling points.
so, oxygen and nitrogen can be separated by fractional distillation because they have different boiling points.