Answered: quantity

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 89AP

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Question

At 1500K, the oxidation of sulfur dioxide produces sulfur trioxide with an equilibrium constant of K=2.3 x 10 ⁴.

2 SO _2(g) + O _2(g) <--> 2 SO _3(g)A quantity of sulfur dioxide and oxygen were placed in a 1.0-liter flask and allowed to react at 999K. After an hour the flask contents were analyzed and the following was obtained.

[SO ₃] = 0.22M
[SO ₂] = 0.55M
[O ₂] = 0.27M

Which of the following is correct?

	a.	The system is at equilibrium
	b.	The system has to shift to the right to achieve equilibrium
	c.	The system has to shift to the left to achieve equilibrium
	d.	Need more information to determine answer

Expert Solution

Step 1 Firstly findout the Qc

Qc = [Product] / [ Reactant ]

Qc = [ SO3 ]^2 / [ SO2 ]^2 • [ O2 ]

Qc = (0.22)^2 / (0.55)^2 • ( 0.27 )

Qc = 0.59

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