7/25/2019 Discussion on Boltzmann Constant

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Discussion on Boltzmann Constant

Boltzmann constant denoted by KBis a physical constant relating energy at the individual

particle level with temperature. Its proportionality constant in between energy of particle and

temperature. It is sometimes referred as a bridge between macroscopic and microscopic

physics.

Macroscopically, the ideal gas law states that, for an ideal gas, the product of pressure p and

volume V is proportional to the product of amount of substance n in moles! and absolute

temperature " by

pV=nRT

#here $ is gas constant %.&'(()*'+! -K'mol'!.

Introducing the Boltzmann constant transforms the ideal gas law into an alternative form

pV=NKT

#here / is the number of molecules of gas. 0or n 1 ' mol, / is e2ual to the number of

particles in one mole i.e. 3vogadros number

4ince KBis proportionality constant its value depend on unit system opted. 0or MK4 system

KBis1.38 E23 -K5'