Yes, those were my thoughts as well.Jano L. said:My guess would be that the gases will evaporate almost independently, so both gases will have their respective pressure as if they were alone in the vessel. Then total pressure will be the sum of the two partial pressures.
Hmm, you bring up a good point. If the liquids are not mixed, I expect the total pressure should still be the sum of the two vapor pressures. But if the liquids are mixed, I guess you could get some boiling point elevation, which suggests a lowering of the vapor pressure at a given temperature.However, even approximately true, some deviation from simple sum should be expected, since the two substances influence each other, more in the liquid and at least a little bit in the gas...
It is not chemistry but rather physics.Redbelly98 said:Somebody with a stronger chemistry background may know better.
Partial pressure is the pressure exerted by a single gas component in a mixture of gases. It is a measure of the individual contribution of that gas to the total pressure.
Partial pressure is calculated by multiplying the total pressure by the mole fraction of the gas in the mixture. The mole fraction is the ratio of the number of moles of the gas to the total number of moles in the mixture.
Partial pressure and vapor pressure are both measures of the pressure exerted by a gas. However, partial pressure is the pressure exerted by a single gas in a mixture, while vapor pressure is the pressure exerted by a gas when it is in equilibrium with its liquid or solid form.
The saturation pressure of a gas is the pressure at which its liquid and gaseous form are in equilibrium. When the saturation pressure is higher, it means that more of the gas molecules can escape from the liquid and contribute to the partial pressure in the gas mixture.
Partial pressure is used in many scientific fields, including chemistry, physics, and engineering. It is particularly important in gas laws, gas exchange in the human body, and industrial processes such as distillation and fermentation.