Question

Partial pressure equals vapour pressure if it is___________

(a) Saturated

(b) Unsaturated

(c) Isothermal

(d) None of the mentioned

I had been asked this question by my college professor while I was bunking the class.

I would like to ask this question from Humidification-Vapour-Gas Mixture in division Humidification Operations of Mass Transfer

Answer 1

The correct answer is (a) Saturated

The explanation is: At saturation, the vapour-gas mixture will be at equilibrium so the vapour pressure equals partial pressure.