24 19. (a) Use Trouton's rule, Delta Hvap^circ approx (88 Standard enthalpy of vapourisation \Delta _ { \mathrm { vap } } \mathrm {.. A) b) ln((p2) (p1)) = ( Hvap) (R)((1) (T1) ( Delta Vap H Latent Heat of Vaporization Delta Hvap of Water calculated by corresponding states correlation
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