Answered: For the reaction2SO2(g) + O2(g) ---->…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter17: Chemcial Thermodynamics

Section: Chapter Questions

Problem 17.20QE: The equilibrium constant for a reaction decreases as temperature increases. Explain how this...

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Question

For the reaction

2SO₂(g) + O₂(g) ----> 2SO₃(g)

delta H° = -198 kJ and delta S° = -188 J/K

The equilibrium constant, K, would be greater than 1 at temperatures _______(above/below) __________ Kelvin.

Select above or below in the first line and enter the temperature in the second line. Assume that delta H° and delta S° are constant.

Expert Solution

Step 1

The temperature above or below and the temperature in kelvin has to be written.

Step 2

The chemical reaction is

2SO₂(g) + O₂(g) ----> 2SO₃(g)

Given values:

delta H° = -198 kJ

delta S° = -188 J/K

The formula to calculate the standard Gibbs free energy is

The formula to calculate the equilibrium constant is

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