Interpretation:
The expression for
Concept introduction:
According to the Raoult’s law, the vapor pressure of the solution is equal to the product of vapor pressure of the solvent and its mole fraction in the solution.
According to the Dalton’s law of gases, the partial pressure of a component is equal to the product of total pressure of the gas mixture and mole fraction of that component.
Answer to Problem 7.27E
The expression for
Explanation of Solution
The mole fraction of the two components in vapor phase can be calculated by using variables
The equation is represented as,
Where,
•
•
•
Substitute the value of
The above equation is rearranged as shown below.
On solving the left hand side of the equation (1),
On solving the right hand side of the equation (2),
Take the common terms together and rearranging the equation (3),
The
Where,
•
•
•
Substitute the value of
Hence, the expression for
The expression for
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Chapter 7 Solutions
Physical Chemistry
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