Question
Write Onne’s equation. Using van der Waals’ equation, obtain an expression of
Boyle temperature (TB) in terms of van der Waals’ constants and hence show that the
Boyle’s temperature is related to critical temperature (TC) through the relation
TB = 3.375TC
Answer :
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Skip in 10
Use van der Waals’ equation:
P is the pressure , Vm is molar volume, R is the universal gas constant, T is the absolute temperature, a,b constant van der Waals’ equation, find the function
P=P(V,T),, as a result we get and let T = const
Tc - temperature at which the difference between liquid and gas disappears,on the isotherms it corresponds to the inflection point (T=Tc), its condition for the function of two variables is
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