Question

A sample of helium saturated with water vapour exerts a total pressure of 103.17 kPa. If the pressure of the helium is 99.39 kPa, what is the temperature?

Answer 1

At equillibrium temperature of water vapour is 100°c

So we have,, P₁/T₁=P₂/T₂

₌103170/100=99390/T₂

=T₂=99390/1031.7

=96.3 degrees.