So I know that for water to boil the vapor pressure has to be equal to atmospheric pressure. Does this mean that as the pressure increases, a substance becomes more gaseous? Then why is CO2 liquid at high pressures?

Question

So I know that for water to boil the vapor pressure has to be equal to atmospheric pressure. Does this mean that as the pressure increases, a substance becomes more gaseous? Then why is CO2 liquid at high pressures?

In: Chemistry

Answer 1

Same for water. Increased pressure keeps it in a liquid state. This is why water boils in a vacuum because relative pressure is much lower.

The pressure of the system is what matters in relation to the fluid material.