Using a thermodynamic process, show that at a temperature T: a) the pressure of an ideal gas in a bounded region is exp(U/kT) times less than in the rest of space, if this region is separated from the rest of space by an energy potential barrier equal to U for each gas particle; b) the concentration of solute molecules in a limited region, exp(U/kT) times less than in the rest of the space occupied by the solvent, if this region is separated from the rest of the solvent by an energy potential barrier equal to U for each molecule of the dissolved solution. the interaction of these molecules with each other can be ignored.