  Generalized forms of jump relations are obtained for one dimensional shock
waves propagating in a non-ideal gas which reduce to Rankine-Hugoniot
conditions for shocks in idea gas when non-idealness parameter becomes zero.
The equation of state for non-ideal gas is considered as given by Landau and
Lifshitz. The jump relations for pressure, density, temperature, particle
velocity, and change in entropy across the shock are derived in terms of
upstream Mach number. Finally, the useful forms of the shock jump relations for
weak and strong shocks, respectively, are obtained in terms of the
non-idealness parameter. It is observed that the shock waves may arise in flow
of real fluids where upstream Mach number is less than unity.
