The vapor pressure of ethylene glycol at several temperatures is given below: Use a semi log plot based on the Clausius?Clapeyron equation to derive an equation for p? (mm Hg) as a function of T(?C). From the plot, estimate the heat of vaporization of ethylene glycol in kJ/mol. (Remember to use absolute temperatures in the Clausius?Clapeyron equation.)

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T(°C) p' (mm Hg) 79.7 105.8 5.0 20.0 120.0 40.0 141.8 178.5 100.0 400.0 197.3 760.0