liquefaction

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 process of compression..

When chlorine is cooled and compressed it gets liquefied to an amber colored liquid. It boils at -34.5 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..

When compressed to 70 atmospheres at room temperature, it liquefies to form liquid carbon dioxide. If this liquid carbon dioxide is allowed to vaporize, heat is drawn from the liquid itself, and as a result, further cooling occurs. The liquid carbon dioxide solidifies to form a snow like solid car..

Under 1 atmospheric pressure, oxygen condenses to a pale blue liquid, at -183 o C. When cooled to -218 o C, it freezes to a snow like solid. Remember : Both liquid and solid oxygen are paramagnetic substances. This means they posses a small positive magnetic affinity for a magnetic field..

Powdered dry ice and ether or acetone, when mixed together, can reduce the temperatures to about -220 o F. At this temperature it is used in liquefaction or solidification of gase..

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 condensing t..

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 t..

Liquefaction : 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 ..

Industrial - 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. ..