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Raoult’s law as special case of Henry’s law

Doc: Raoult`s Law as a Special Case of Henry`s Law - Class 12 •  At a given temperature liquids vaporize. At equilibrium the pressure exertedby the vapour of the liquid over the liquidphase is referred to as vapour pressure.

•  According to Raoult’s law, vapour pressure of a volatile component in a given solution ca be defined by pi = pi 0 xi

•  In an answer of a gas in a fluid one of the segments is volatile to the point that it exists as a gas and solvency is given by Henry's law which expresses that p = KH x

•  Comparing both the equations we get that partial pressure of the volatile component or gas is directly proportional to its mole fraction in solution. Proportionality constant KH differs from p10

•  Therefore, Raoult's law turns into a unique instance of Henry’s law in which KH get to be equivalent to p10.

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FAQs on Doc: Raoult's Law as a Special Case of Henry's Law - Class 12

1. What is Raoult's Law?
Ans. Raoult's Law is a scientific principle that states that the partial pressure of a solvent in a solution is directly proportional to its mole fraction in the solution, assuming ideal behavior of both the solvent and the solute.
2. How does Raoult's Law relate to Henry's Law?
Ans. Raoult's Law can be considered as a special case of Henry's Law when the solute in the solution is a gas. While Raoult's Law applies to ideal solutions, Henry's Law applies to non-ideal solutions and describes the solubility of gases in liquids.
3. Can Raoult's Law be applied to all types of solutions?
Ans. No, Raoult's Law is only applicable to ideal solutions where both the solvent and the solute obey ideal behavior. In non-ideal solutions, deviations from Raoult's Law occur due to interactions between the solvent and solute particles.
4. What are the assumptions made in Raoult's Law?
Ans. Raoult's Law assumes that the solvent and solute particles do not interact with each other, and that the solution behaves ideally. It also assumes that the vapor pressure of the solvent is not affected by the presence of the solute.
5. What are the practical applications of Raoult's Law?
Ans. Raoult's Law is widely used in various fields, such as chemistry, chemical engineering, and environmental science. It is used to calculate the vapor pressure of volatile solvents in solutions, predict the behavior of ideal solutions, and determine the composition of mixtures based on partial pressures.
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