May 2011
Beginner
492 pages
14h 16m
English
Q 1. Calculate the temperature of inversion of hydrogen where cooling effect would vanish from the following data assuming that the gas obeys Van der Waals’ equation.
Critical temperature of hydrogen = 33.18 K
Critical pressure of hydrogen = 12.80 atmospheres
Ans. We have
or
Density of hydrogen = 0.08987 gm/litre
Gram- Molecular Volume of hydrogen = v =
Substituting the value in Eq. 7.15,
or
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