Separation Techniques for Gases

There are several separation techniques used to separate mixtures, and the choice of the technique depends on the nature of the mixture and the components involved. When it comes to separating a mixture of two or more gases, the most suitable technique is liquification.

1. Liquification:
Liquification is the process of converting a gas into its liquid form. This technique takes advantage of the differences in boiling points of the gases in the mixture. Each gas has a specific boiling point at which it changes from a gas to a liquid. By cooling the mixture to a temperature below the boiling point of the gas with the highest boiling point, that particular gas will condense and be separated from the other gases in the mixture. The remaining gases can be collected separately.

2. Sedimentation:
Sedimentation is a technique used to separate solid particles from a liquid. It involves allowing the mixture to stand undisturbed so that the solid particles settle at the bottom due to gravity. However, sedimentation is not applicable for separating gases as they do not settle down like solid particles.

3. Hand picking:
Hand picking is a simple separation technique in which the individual components of a mixture are manually separated by hand. However, this technique is not applicable for gases as they cannot be physically separated by hand.

4. Decantation:
Decantation is a technique used to separate a liquid from a solid by pouring off the liquid carefully, leaving the solid behind. While decantation can be used to separate a liquid from a solid, it is not suitable for separating gases from each other.

In conclusion, the most appropriate separation technique for separating a mixture of two or more gases is liquification. By cooling the mixture below the boiling point of the gas with the highest boiling point, that gas can be condensed and separated from the other gases in the mixture.

Liquifaction is the method by which gases seperated.