The vapour pressure of a certain liquid is given by the equation: _ 10 P = 3.54595 +…

PHYSICS · Subjective · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

The vapour pressure of a certain liquid is given by the equation:

\log_{10} P = 3.54595 + \frac{313.7}{T} + 1.40655 \log_{10} T,

where

P

is the vapour pressure in mm and

T

is temperature in K. Determine molar latent heat of vaporisation as a function of temperature and calculate its value at 80K.