The vapour pressure of ethanol, C₂H₆O, is 7.4 kPa at 25°C. Determine the normal boiling temperature of ethanol if the enthalpy of vaporization is 42.3 kJ mol^-1.

Question

Quizplus · Accepted Answer

The normal boiling point is when the vapor pressure equals atmospheric pressure (101.3 kPa). Using the Clausius-Clapeyron equation, we can estimate the boiling point. Solving for T2 when P2 = 101.3 kPa, we find it to be approximately 352 K.

The Vapour Pressure of Ethanol, C2H6O, Is 7

The Vapour Pressure of Ethanol, C₂H₆O, Is 7