The boiling points of some gases found in air are given below.
Name Boiling point ( $^{o}$ C)
Krypton -152
Neon -246
Nitrogen -196
Oxygen -183
If a liquid mixture of the above gases is fractionally distilled, in what order will these gases distil out?

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Solution

The gases will distil out in order of increasing boiling points. The gases with lowest boiling point first and that of highest boiling point last, i.e. neon, nitrogen, oxygen and krypton.

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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.

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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.

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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.

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Name	Boiling point ( $^{o}$ C)
Krypton	-152
Neon	-246
Nitrogen	-196
Oxygen	-183

The boiling points of some gases found in air are given below.NameBoiling point (oC)Krypton-152Neon-246Nitrogen-196Oxygen-183If a liquid mixture of the above gases is fractionally distilled, in what order will these gases distil out?

The gases will distil out in order of increasing boiling points. The gases with lowest boiling point first and that of highest boiling point last, i.e. neon, nitrogen, oxygen and krypton.

The boiling points of some gases found in air are given below.
Name Boiling point ( $^{o}$ C)
Krypton -152
Neon -246
Nitrogen -196
Oxygen -183
If a liquid mixture of the above gases is fractionally distilled, in what order will these gases distil out?