CH 353 Lecture 22: Calpeyron, Clausius, and Mixed Solutions

Antoine equation The Clausius Clapeyron equation is a specific case of the Antoine equation. Express the A, B and C parameters of the Antoine equation in terms of the Clausius Clapeyron. Clausius Clapeyron: ln [p/p_o] = - delta H/R[1/T - 1/T_o] Antoine: ln[p^vap] = A - B/T+C

Using both the Clapeyron and the Clausius-Clapeyron equations determine the pressure necessary to change the boiling point of water from its 1.000 atm value of 100 degree C to 97 degree C. Make a brief comment on the results. Use the data reported in the table: Molar heat of vaporization for water 40.7 kJ-mol-1 Density of liquid water at 100 degree C 0.958 g-mL-1 Density of steam 0.5983 g-L-1 1 L-atm 101.32 J p Clapeyron f = P Clausius-Clapeyron f =