law of corresponding states

physics

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In liquid: Behaviour of substances near critical and triple points
…commonly referred to as the law of corresponding states. Roughly speaking, this approach presumes that, if the phase diagram is plotted using reduced variables, the behaviour of all substances will be more or less the same. Reduced variables are defined by dividing the actual variable by its associated critical constant:…
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In gas: Continuity of gaseous and liquid states
…idea called the principle of corresponding states. This principle states that, if the pressure (p), volume (V), and temperature (T) of a gas are replaced, respectively, with the corresponding reduced variables—i.e., the pressure divided by the critical pressure (p/p_c), the volume divided by the critical volume (V/V_c), and the temperature…
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