2. The ideal gas law PV = nRT describes the relationship between pressure (P), temperature (T), volume (V), and the number of moles of gas (n). The additional symbol, R, represents the ideal gas constant. In 1873, J. D. van der Waals proposed a modified version of the ideal gas law that better models the behavior of real gases over a wider range of temperature and pressure. (P + 12 (v - nb) = nRT In this equation the additional variables a and b represent values characteristic of individual gases. Use both the ideal gas equation and van der Waals' equation to calculate the temperature of water vapor (steam), given the following data. Pressure, P 220 bar Moles, n 2 mol Volume, V IL 5.536 L bar/mol? 0.03049 L/mol Ideal gas constant, R 0.08314472 L bar/K mol *Source: Weast, R. C. (Ed.), Handbook of Chemistry and Physics (53rd Edn.), Cleveland: Chemical Rubber Co., 1972