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# Boynton and Bramley equation of state

The **Boynton and Bramley equation of state** is given by ^{[1]}

where is a characteristic temperature. and where:

- is the pressure,
- is the volume,
- is the absolute temperature,
- is the molar gas constant; , with being the Avogadro constant and being the Boltzmann constant.
- and are constants that introduce the effects of attraction and volume respectively and depend on the substance in question.

For this equation at the critical point one has