"The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture". This is

Sublimation temperature of dry ice (solid CO₂) is __________ °C.

The equation relating E, P, V and T which is true for all substanes under all conditions is given by $${\left( {\frac{{\partial {\text{E}}}}{{\partial {\text{V}}}}} \right)_{\text{T}}} = {\text{T}} \cdot {\left( {\frac{{\partial {\text{P}}}}{{\partial {\text{T}}}}} \right)_{\text{H}}} - {\text{P}}{\text{.}}$$      This equation is called the

Henry's law is closely obeyed by a gas, when its __________ is extremely high.

If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero.