The Boltzmann Constant (OCR A Level Physics) : Revision Note
The Boltzmann Constant
The Boltzmann constant k is used in the ideal gas equation and is defined by the equation:

Where:
R = molar gas constant
NA = Avogadro’s constant
Boltzmann’s constant therefore has a value of
The Boltzmann constant relates the properties of microscopic particles (e.g. kinetic energy of gas molecules) to their macroscopic properties (e.g. temperature)
This is why the units are J K−1
Its value is very small because the increase in kinetic energy of a molecule is very small for every incremental increase in temperature
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