Calculate "W" and "AU" for the conversion of three moles of benzene at 80 C to gas at 1 atm pressure. The heat of the vapourisation of benzene at 80 C is 30840 Jmol. CH2=CH2 + H2 CH3-CH3 The activation energy of this hydrogenation reaction is Ea 94 kJ moll, when the substance [RhCl(PPh3)3] is added to the reaction the activation energy (Ea) is changed to be 38 kJ mol-'. Explain the role and impact of substance [RhCl(PPh3)3] on the rate of the reaction with a proper diagram