What is liquefaction of gases explain?
Liquefaction is the transformation of a gaseous substance into its liquid state. This change is the outcome of change in physical conditions like temperature, pressure, and volume. Thomas Andrew was the first person to study the change of state from gases to liquids in Carbon Dioxide.
What is liquefaction of gases explain its uses with example?
In principle, any gas can be liquefied, so their compactness and ease of transportation has made them popular for a number of other applications. For example, liquid oxygen and liquid hydrogen are used in rocket engines. Liquid oxygen and liquid acetylene can be used in welding operations.
What are the factors affecting liquefaction of gases?
The effect of temperature on the liquefaction of gases is found to be very important as higher the temperature of the gas ,more difficult it is to liquefy it and higher is the pressure required. Gas like hydrogen ,helium, oxygen, nitrogen could not be liquefied at room temperature by application of pressure alone.
Why is liquefaction of a gas important?
Ans: The importance of liquefaction of gas is that they can be stored and transported in a much more compact form than done in the gaseous state. For example, the two most important gases are LPG and Liquid Oxygen.
What is the basic principle of liquefaction?
Liquefaction is the transformation of a gaseous substance into its liquid state. This change is the outcome of change in physical conditions like temperature, pressure, and volume. For example: When high pressure is applied to a gas, it gets compressed and when we lower its temperature it gets cooled.
What is liquefaction of gases Class 11?
The liquefaction of a gas takes place when the intermolecular forces of attraction become so high that they bind the gas molecules together to form the liquid state.
What are the methods of liquification of gases?
In general, gases can be liquefied by one of three general methods: (1) by compressing the gas at temperatures less than its critical temperature; (2) by making the gas do some kind of work against an external force, causing the gas to lose energy and change to the liquid state; and (3) by making gas do work against …
What are the two factors necessary for liquefaction?
1. Loose, granular soil – typically artificial fill (landfill) and beach or stream deposits that are loosely compacted. 2. Saturation of the soil by ground water (water fills the spaces between the soil particles).
What is the role of critical temperature in liquefaction of gases?
The critical temperature of a gas is the temperature above which it is impossible to liquefy it with any amount of pressure. for example, Carbon dioxide has a critical temperature of 30.98oC. This means that no amount of pressure given to carbon dioxide will cause it to liquefy above 30.98oC.
What is the effect of liquefaction?
Liquefaction takes place when loosely packed, water-logged sediments at or near the ground surface lose their strength in response to strong ground shaking. Liquefaction occurring beneath buildings and other structures can cause major damage during earthquakes.