cooling liquefaction of gas

When cooled under pressure ammonia condenses to a colorless liquid, which boils at -33.4 o C. When further cooled, it freezes to a white crystalline snow-like solid, which melts at -77.7 o ..

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 subjected to the same pr..

When cooled and compressed nitrogen liquefies to a colorless liquid, which boils at -196 o C. When further cooled, it freezes to a white snow like solid, which melts at -210 o ..

Liquefaction of Gases - There are large empty spaces (voids) separating the tiny molecules of gases from one another. Each molecule enjoys an almost independent existence. Molecules are in a state of continuous rapid motion and have negligible attractive forces between them due to wide se..

There are large empty spaces (voids) separating the tiny molecules of gases from one another. Each molecule enjoys an almost independent existence. Molecules are in a state of continuous rapid motion and have negligible attractive forces between them due to wide separation. This is particular..

has no definite volume or shape is fluid is very compressible. It takes the volume and shape of the vessel in which it is kept. For example: Hydrogen and carbon dioxide All the three states of matter are inter-convertible. For example: water When water is cooled to 0 o C, it tr..

Experimental observations have shown that effect of temperature is more significant in achieving liquefaction than that of pressure. This is due to the fact that for every gas there is a certain temperature above which it cannot be liquefied how so ever high the pressure may be..

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 200 atmospheres. It is then re..

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 rise into the air. 4. Solubility of H 2 ..

The change of state from the gaseous form to the liquid form is called condensation. It is also called liquefaction. A good example of this process is that of water vapour in atmosphere condensing to form rain. By applying pressure to a gas the particles come closer and start co..