
Interpretation:
The equation 7.49 is to be derived.
Concept introduction:
When a non-volatile solute is added to a solvent, the boiling point of the solution gets raised in comparison to the pure solvent. This phenomenon is known as elevation in boiling point. Elevation in boiling point is a colligative property.

Answer to Problem 7.84E
The equation 7.41 can be represented for the vaporization process as shown below.
Where,
•
•
•
The
Applying the Taylor-series expansion on
Rearrange the temperature terms as shown below.
The term
The relationship between molality and mole fraction is,
Where,
•
•
•
Substitute the value of
Explanation of Solution
The equation 7.41 can be represented for the vaporization process as shown below.
Where,
•
•
•
The
Applying the Taylor-series expansion on
Rearrange the temperature terms as shown below.
The term
The relationship between molality and mole fraction is,
Where,
•
•
•
Substitute the value of
The derivation of equation of 7.49 has been rightfully stated.
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Chapter 7 Solutions
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