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Chapter 12: Problem 40

Write the equation representing Raoult's law, and express it in words.

Short Answer

Expert verified
The equation representing Raoult's law is \( P = x_{A} \cdot P^{*}_{A} \), which means the partial pressure of a component in a mixture is equal to the mole fraction of that component in the liquid phase multiplied by the vapour pressure of the pure component.

Step by step solution

01

Write down the numerical expression of Raoult's law

Raoult's law can be represented by the following equation: \( P = x_{A} \cdot P^{*}_{A} \). Here \( P \) is the partial pressure of component A in the gas phase, \( x_{A} \) is the mole fraction of component A in the liquid phase, and \( P^{*}_{A} \) is the vapour pressure of pure component A.
02

Explain the equation

In words, Raoult's law states that the partial pressure of a component in a mixture is equal to the mole fraction of that component in the liquid phase times the vapour pressure of the pure component.

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