Answered: 3) At 207 °C, Kp = 0.276 for the…

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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Question

3) At 207 °C, Kp = 0.276 for the reaction
PCl5(g) ⇌ PCl3(g) + Cl2(g)

a. If 0.100 mole of PCl5(g) is placed in an otherwise empty 12.0-L vessel at 207 °C, calculate the partial pressures of PCl5(g), PCl3 (g), and Cl2(g) at equilibrium.

b. In another experiment the total pressure of an equilibrium mixture is 2.00 atm at 207 °C. What mass of PCl5 was introduced into an otherwise empty 5.00-L vessel to reach this equilibrium position?

Expert Solution

Step 1

According to the question,

$T h e K_{p} = 0.276$

The reaction is given by,

$P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g)$

$T h e m o l e s o f P C l_{5} (n) = 0.1 m o l e T h e v o l u m e o f t h e v e s s e l i s (V) = 12.0 L T e m p e r a t u r e = 207 + 273 K = 480 K$

Find- The partial pressures of PCl₅(g), PCl₃(g), and Cl₂(g) at equilibrium and The mass of PCl₅ when the total pressure of an equilibrium mixture is 2.00 atm.

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