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Concept explainers
(a)
The natural Logarithm equilibrium constant for the reaction at
Compare the results for the values of
(a)
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Answer to Problem 23P
The natural Logarithm equilibrium constant for the reaction at
The natural equilibrium constant obtained from the equilibrium constants of Table A-28 at 2
Explanation of Solution
Express the standard-state Gibbs function change.
Here, the Gibbs function of components
Write the equation to calculate the natural logarithms of equilibrium constant for the chemical equilibrium of ideal-gas mixtures.
Here, universal gas constant is
Conclusion:
From the equilibrium reaction, the values of
Refer Table A-26, obtain the values of
Substitute 1 for
Substitute
Thus, the equilibrium constant obtained from the equilibrium reaction at 298 K is
From table A-28, “Natural logarithms of the equilibrium constant” obtain the equilibrium constant for the reaction at the temperature of 298 K as
The value obtained for equilibrium constant at 298 K from the definition of the equilibrium constant is
(b)
The natural logarithm equilibrium constant for the reaction at 2000 K.
Compare the results for the values of
(b)
![Check Mark](/static/check-mark.png)
Answer to Problem 23P
The natural logarithm equilibrium constant for the reaction at 2000 K is
The natural Logarithm equilibrium constant obtained from the equilibrium constants of Table A-28 at 2000K is
Explanation of Solution
Express the standard-state Gibbs function change.
Here, the Gibbs function of components
Write the equation to calculate the natural logarithms of equilibrium constant for the chemical equilibrium of ideal-gas mixtures.
Here, universal gas constant is
Conclusion:
From the equilibrium reaction, the values of
Refer Table A-26, obtain the values of
Refer Table A-20, obtain the value of
Refer Table A-20, obtain the value of
Refer Table A-21, obtain the value of
Refer Table A-21, obtain the value of
Refer Table A-19, obtain the value of
Refer to Table A-19, obtain the value of
Substitute 1 for
Substitute
Thus, the natural logarithm equilibrium constant obtained from the equilibrium reaction at 2000K is
Refer Table A-28, “Natural logarithms of the equilibrium constant” obtain the equilibrium constant for the reaction by interpolating for the temperature of 2000 K as
The value obtained for equilibrium constant at 2000K from the definition of the equilibrium constant is
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Chapter 16 Solutions
THERMODYNAMICS (LL)-W/ACCESS >CUSTOM<
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