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Gas/Ideal gas

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An ideal gas is defined as one in which all collisions between atoms or molecules are perfectly eleastic and in which there are no intermolecular attractive forces.

A gas is said to be an ideal gas if it has the following properties:

  • There is no intermolecular forces between the gas molecules, i.e., gas molecules don't exert any kind of force on each other.
  • Size of the gas molecules is negligible as compared to the volume occupied by the gas(container's volume).

In an ideal gas, the internal energy is present in form of kinetic energy. So, the temperature of the gas is directly proportional to change in kinetic energy of the gas molecules.

The concept of ideal gas is theoretical and no gas exists which satisfies the above requirements at all the conditions. Thus, all the gases are real gases but they may behave as ideal under certain conditions of Pressure, Volume and Temperature.

Ideal Gas Law

The Ideal gas equation is given by:

PV = nRT
where, P = pressure of the ideal gas
V = volume of the gas
n = number of moles
R = Universal Gas constant = 8.3145 J/mol K
T is temperature of the gas.

Gas laws (Ideal)>>>

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