How does the partial pressure of gas A in a mixture

Solution 29P

Here, we are going to explain the Partial pressure of a gas A in a mixture compare to its mole fraction of the mixture.

Step 1 of 2

Dalton’s law of partial pressure:

The total pressure in a mixture of gases is the sum of the partial pressure of each gas.

Ptotal   = P1 + P2 + P3+ ……….

Raoult’s law:

When two liquids that are completely soluble in one another are mixed together, the partial pressure of a component equal to its vapour pressure when pure at this temperature and its mole fraction in liquid.

PA = XA Ptotal

PA  = Partial pressure of gas A

XA  = Mole fraction of gas A

Ptotal   = Vapor pressure of mixture.

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