The difference between `Delta`H and `Delta`U at constant volume is equal to 24 19. (a) Use Trouton's rule, Delta Hvap^circ approx (88 What is E when 2.0 mole of liquid water vaporises at 100C? The heat of vaporisation, H vap. of water at 100C is 40.66 kJmol^ 1. Sarthaks eConnect Largest Online Education Community Solved] 1. The boiling point of propane at 1 atm (14.7 psi) pressure is 42.0 C and its H(vap) is 18.8 kJ mol. R = 8.314 Course Hero
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delta vap h Video answer for \Delta_{\text {vap }} \mathrm{H}^{\Theta} for water is +40.79 \mathrm{kJ} \mathrm{mol}^{-1} at 1 bar and 100^{\circ} \mathrm{C}. Change in internal energy for this vapourisation under