liquefaction of air

Air, free from dust, water vapour and carbon dioxide is compressed by increasing the pressure to about 200 atmospheres. When the pressurised air is released into a chamber through a small orifice intense cooling of the air takes place. The cooled air is subj..

The chief source of free nitrogen is atmospheric air and nitrogen is usually prepared from it. Air free from dust, water vapour and carbon dioxide is compressed in a compression chamber for liquefaction. Firstly, the pressure on the air is increased to ..

The chief source of free nitrogen is atmospheric air and nitrogen is usually prepared from it. Air free from dust, water vapour and carbon dioxide is compressed in a compression chamber for liquefaction. Firstly, the pressure on the air is increased to about ..

Noble Gases - The amount of all the noble gases put together (Helium, Neon, Argon, Krypton, Xenon and radon) is extremely low in air. These form only 0.94% of the volume of air and as such can be treated as negligible. These gases were found chemically inert (i.e. did not mix wi..

Industrially, oxygen is manufactured from the air. The industrial method is based on a very simple principle known as Joule-Thomson effect. Air is first subjected to liquefaction (made liquid) and then to fractional distillation, to separate out oxygen from it. When..

>The amount of ortho and para hydrogen varies with temperature as: At 0K, hydrogen contains mainly para hydrogen which is more stable. At the temperature of liquefaction of air, the ratio of ortho and para hydrogen is 1 : 1. At the room temperature, the ratio of ortho to para hy..

Physical Properties of Hydrogen - 1. A colourless, odourless and tasteless gas. 2. Non-poisonous. 3. Its vapour density is 1. (Vapour density of air = 14.4). Thus it is much lighter than air. Passing hydrogen through soap solution can easily prove this. The bubbles formed will r..