Of the following binary liquid/vapor systems, which can be approximately modelled by Raoult's law? The table showing the characteristic properties of pure species may be useful. Explain your answers with

thermodynamic reasoning. (a) Benzene/toluene at 1(atm) (b) n-Hexane/n-heptane at 25 bar (c) Hydrogen/propane at 200 K (d) Iso-octane/n-octane at 100°C (e) Water/n-decane at 1 bar