VLE Thermodynamics Quiz

What is the Roult's law?

• Vapor pressure of a solution is directly proportional to the volume of the solution.

• Vapor pressure of a solution is directly proportional to the mole fraction of solvent present in the solution.

• Vapor pressure of a solution is inversely proportional to the temperature of the solution.

• Vapor pressure of a solution is directly proportional to the mole fraction of solute present in the solution.

State Henry's law and its significance in VLE thermodynamics.

• Henry's law is only relevant in the study of pure substances, not mixtures

• Henry's law only applies to solids and liquids, not gases

• The significance of Henry's law in VLE thermodynamics is that it helps in understanding the behavior of gas-liquid equilibrium and the solubility of gases in liquids.

• Henry's law has no significance in VLE thermodynamics

Explain the concept of phase equilibrium in VLE thermodynamics.

• Phase equilibrium refers to the state where the temperature is constant

• Phase equilibrium refers to the state where phases never coexist

• Phase equilibrium in VLE thermodynamics refers to the state where two or more phases coexist in equilibrium.

• Phase equilibrium refers to the state where only one phase exists

What is the Duhem theorem and how is it related to VLE thermodynamics?

• The Duhem theorem is unrelated to VLE thermodynamics and only applies to ideal gas behavior

• The Duhem theorem is a law of thermodynamics that only applies to pure substances

• The Duhem theorem is related to VLE thermodynamics as it helps in understanding the behavior of mixtures and the number of independent variables required to describe the system.

• The Duhem theorem is a concept in quantum mechanics and has no relevance to VLE thermodynamics

According to Roult's law, what is the relationship between the vapor pressure of a solution and the vapor pressure of its pure components?

• Directly proportional

• Unrelated

• Constant

• Indirectly proportional

How does Henry's law describe the solubility of a gas in a liquid?

• Solubility is not affected by the partial pressure of the gas

• Solubility is directly proportional to the partial pressure of the gas

• Solubility is inversely proportional to the partial pressure of the gas

• Solubility is directly proportional to the temperature of the liquid

Discuss the conditions under which a system is said to be in phase equilibrium.

• When the volume of each component in each phase is equal.

• When the temperature of each component in each phase is equal.

• When the chemical potential of each component in each phase is equal.

• When the pressure of each component in each phase is equal.

Explain the significance of Duhem theorem in the study of VLE thermodynamics.

• The Duhem theorem increases the number of independent intensive variables by one in a mixture

• The Duhem theorem reduces the number of independent intensive variables by one in a mixture, aiding in the study of VLE thermodynamics.

• The Duhem theorem has no significance in the study of VLE thermodynamics

• The Duhem theorem is only applicable to single-component systems

What are the limitations of Roult's law in predicting the behavior of real solutions?

• Temperature dependence not considered

• Pressure dependence not considered

• Concentration dependence not considered

• Ideal behavior assumption

How does the application of Henry's law differ for ideal and non-ideal solutions?

• The application of Henry's law differs in that for ideal solutions, the relationship between solubility and pressure is linear, while for non-ideal solutions, the relationship may deviate from linearity.

• Non-ideal solutions have higher solubility than ideal solutions

• For ideal solutions, the relationship between solubility and pressure is non-linear

• The application of Henry's law is the same for both ideal and non-ideal solutions