The vapour pressure of pyridine, C₅H₅N, is 2.25 kPa at 25°C. Determine the normal boiling temperature of pyridine if the enthalpy of vaporization is 40.3 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. Given the enthalpy of vaporization and the vapor pressure at 25°C, the calculation shows that the boiling point is approximately 389 K.

The Vapour Pressure of Pyridine, C5H5N, Is 2

The Vapour Pressure of Pyridine, C₅H₅N, Is 2