Answered: The vapor pressure of pure toluene…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The vapor pressure of pure toluene (C₆H₅CH₃, MW = 92.14 g/mol) at T = 100.0 °C is p_T° = 557.0 torr. What is the vapor pressure of a solution containing 20.00 g of naphthalene (C₁₀H₈, MW = 128.17 g/mol), a nonvolatile solute, and 240.0 g of toluene, at T = 100.0 °C?

Expert Solution

Step 1

The Raoult's for non volatile solute can be expressed as,

Where, P⁰is the vapour pressure of the solvent

P_solis the vapour pressure of the solution

x₂ is the mole fraction of the solute

n₁ is the number of moles of solvent

n₂ is the number of moles of solute

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