According to Raoult's law, what is the partial vapor pressure of a component in a solution based on?

According to Raoult's law, what is the partial vapor pressure of a component in a solution based on?

• A. The vapor pressure of the pure component and its mole fraction in the solution
• B. The temperature and volume of the solution
• C. The total pressure exerted by all components in the solution
• D. The number of moles of solute and solvent

Answer: (A)

Raoult's law states that the partial vapor pressure of a component in a solution is directly proportional to the vapor pressure of the pure component and its mole fraction in the solution. This means that as the concentration of a component increases in a mixture, its contribution to the overall vapor pressure also increases. When considering a solution, the vapor pressure of a pure component is a crucial factor, as it reflects how that component would behave if it were the only substance present. The mole fraction, which represents the ratio of the number of moles of that component to the total number of moles in the solution, helps determine how much of that substance will vaporize compared to others. This relationship allows for the prediction of how the vapor pressure will change when mixing different substances, enabling a deeper understanding of solutions and their properties, which is essential in various fields of chemistry and industry. The focus on the pure component’s vapor pressure combined with its proportion in the mixture accurately describes the vapor dynamics of multi-component solutions.

Raoult's law states that the partial vapor pressure of a component in a solution is directly proportional to the vapor pressure of the pure component and its mole fraction in the solution. This means that as the concentration of a component increases in a mixture, its contribution to the overall vapor pressure also increases.

When considering a solution, the vapor pressure of a pure component is a crucial factor, as it reflects how that component would behave if it were the only substance present. The mole fraction, which represents the ratio of the number of moles of that component to the total number of moles in the solution, helps determine how much of that substance will vaporize compared to others.

This relationship allows for the prediction of how the vapor pressure will change when mixing different substances, enabling a deeper understanding of solutions and their properties, which is essential in various fields of chemistry and industry. The focus on the pure component’s vapor pressure combined with its proportion in the mixture accurately describes the vapor dynamics of multi-component solutions.