We look for the critical exponents by observing the thermodynamic quantities (namely reduced pressure, reduced temperature and reduced volume) close to the critical point.
We define these quantities as follows.
$\widetilde{P}=1=\pi$
$\widetilde{v}=1=\phi$
$\widetilde{T}=1+t$
where $t$ is reduced temperature.
Referring to the [chart](Critical%20exponents%20of%20fluid%20systems.md#^098487) we need to find the exponents for the following general relations:
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