Vapor Pressure and Boiling
Vapor pressure and boiling are fundamental concepts in the study of thermodynamics and phase transitions. Vapor pressure represents the pressure exerted by a vapor in equilibrium with its condensed phases, typically a liquid or solid. It is influenced by factors such as temperature and intermolecular forces. Boiling, on the other hand, is the rapid vaporization of a liquid when its vapor pressure equals the atmospheric pressure or the pressure exerted on the liquid. Understanding these phenomena is crucial in various fields, including chemistry, physics, and engineering, due to their applications in processes like distillation, cooking, and chemical reactions.
Questions
- How do vapour pressures of substances like dry ice, and water, and mercury, relate to boiling point?
- How many kilojoules of heat are required to vaporize 50.0 g of ethanol, #C_2H_6O#? The boiling point of ethanol is 78.3°C. Its molar heat of vaporization is 38.6 kJ/mol.
- When a system has constant vapor pressure, what exists between the liquid and its vapor?
- What is the boiling point of a 0.527 m aqueous solution of LiBr?
- How can vapor pressure be lowered?
- If benzene and toluene have pure vapor pressures of #"700 torr"# and #"600 torr"# respectively at a certain temperature, then upon mixing equal mols of both together, what is the mol fraction of benzene above the solution phase?
- Why isn't the volume decreasing?
- What would happen to the boiling point of a substance if the elevation were to rise?
- What is the vapor pressure of a liquid at its normal boiling temperature?
- How does the boiling point of water change as altitude increases?
- How do you determine highest boiling point?
- Why does vinegar NOT have a constant boiling point?
- What is the ester formed by #"acetic acid"# and #"n-butanol"#?
- How do you calculate the vapor pressure of water above a solution prepared by dissolving 39.5 g in glycerin (#C_3H_8O_3#) to 149 g of water at 343 K?
- What is the new boiling temperature for bromine, if the pressure changes from atmospheric pressure to #"76000 Pa"#?
- In terms of intermolecular forces, what are the difference in the boiling points of #O_2# and #O_3# at standard pressure?
- Why is the boiling point of water less than a hundred degrees celsius at higher altitudes?
- How do you find vapor pressure of water at given temperature?
- Why does ice have a higher melting point than solid ammonia?
- What causes water's low vapor pressure?