An ideal gas is defined as one in which all collisions between atoms or molecules are perfectly elastic and in which there are no intermolecular attractive forces. | |
Ideal gas law is a generalization containing both Boyle's law and Charles's law as special cases and states that: | |
In such a gas, all the internal energy is in the form of kinetic energy and any change in internal energy is accompanied by a change in temperature. An ideal gas can be characterized by three state variables: | |
| |
The relationship between them may be deduced from kinetic theory and is called the Ideal gas law. | |
PV = kT = nRT | |
where | |
| |
The ideal gas law can be viewed as arising from the kinetic pressure of gas molecules colliding with the walls of a container in accordance with Newton's laws. But there is also a statistical element in the determination of the average kinetic energy of those molecules. The temperature is taken to be proportional to this average kinetic energy; this invokes the idea of kinetic temperature. |
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Tuesday 30 July 2013
GENERALISED GAS EQUATION
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