The decomposition of
(a) Using the data in Appendix
(b) Calculate
(c) What are
(d) In a grease fire, the temperature can be around
(a)
Interpretation:
The Gibbs free energy of reaction and standard enthalpy of reaction are to be calculated.
Concept introduction:
The standard Gibbs free energy of reaction gives the feasibility of reaction. It is related to equilibrium constant by the equation given below.
In the above reaction,
Answer to Problem 5.51E
The Gibbs free energy of reaction
Explanation of Solution
The reaction given is as written below.
For calculation of
On substitution of the values in above equation,
Similarly, for calculation of
On substitution of the values in above equation,
The Gibbs free energy of reaction and standard enthalpy of reaction are calculated as
(b)
Interpretation:
The value of equilibrium constant
Concept introduction:
The standard Gibbs free energy of reaction gives the feasibility of reaction. It is related to equilibrium constant by the equation given below.
In the above reaction,
Answer to Problem 5.51E
The value of equilibrium constant
Explanation of Solution
For calculation of equilibrium constant, the above equation can be written as given below.
Rearranged equation for calculation of equilibrium constant can be written as follows.
On substitution of the values in above equation, equilibrium constant obtained is given below.
The value of equilibrium constant
(c)
Interpretation:
The partial pressure at
Concept introduction:
The standard Gibbs free energy of reaction gives the feasibility of reaction. It is related to equilibrium constant by the equation given below.
In the above reaction,
The equilibrium constant can be written in terms of partial pressure of gases as shown below.
Answer to Problem 5.51E
The value of partial pressure at
Explanation of Solution
For calculation of partial pressure, the above equation can be written as given below.
Rearranged equation for calculation of partial pressure can be written as follows.
Also, the partial pressures in the given equation have the relation of
On substitution of the values in above equation, partial pressure obtained is given below.
The value of partial pressure at
(d)
Interpretation:
The value of partial pressure at
Concept introduction:
The standard Gibbs free energy of reaction gives the feasibility of reaction. It is related to equilibrium constant by the equation given below.
In the above reaction,
The equilibrium constant can be written in terms of partial pressure of gases as shown below.
Answer to Problem 5.51E
The value of partial pressure at
Explanation of Solution
For calculation of equilibrium constant at
Rearranged equation for calculation of equilibrium constant can be written as follows.
On substitution of the values in above equation, equilibrium constant obtained is given below.
For calculation of partial pressure, the above equation can be written as given below.
Rearranged equation for calculation of partial pressure can be written as follows.
Also, the partial pressures in the given equation have the relation of
On substitution of the values in above equation, partial pressure obtained is given below.
The value of partial pressure at
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Chapter 5 Solutions
Physical Chemistry
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