Question

Liquid A. boils at 78°C. Liquid B boils at 100°C. Which liquid has the higher vapor pressure at 50°C?

Answer 1

In general, the vapor pressure and the boiling temperature are inversely proportional, this means that the lower the boiling temperature, the higher the vapor pressure.

So the liquid has the higher vapor pressure at 50°C is A because A has lower boiling temperature