
(a)
Interpretation:
The given reaction has to be shown whether it is thermodynamically feasible or not.
Concept introduction:
Free energy (or) entropy change is the term that is used to explain the total energy content in a thermodynamic system that can be converted into work. The free energy is represented by the letter G. All spontaneous process is associated with the decrease of free energy in the system. The equation given below helps us to calculate the change in free energy in a system.
Where,
(a)

Answer to Problem 20.93P
Methanol formation standard free energy values is
Explanation of Solution
The reaction for formation of methanol is,
Standard enthalpy change is,
The enthalpy change for the reaction is calculated as follows,
Hence, the enthalpy changes
Entropy change
Calculate the change in entropy for this reaction as follows,
Where,
The
Calculate the Free enrgy change
Standared Free energy change equation iss,
Calcualted enthalpy and entropy values are
These values are plugging above standard free energy equation,
Methanol formation standard free energy values is
(b)
Interpretation:
The given methanol formation reaction has to be shown that whether it is favored at low or at high temperatures.
Concept introduction:
Any natural process or a
In
(b)

Explanation of Solution
The reaction for formation of methanol is,
Calcualted enthalpy and entropy values are
At temprature become above
(c)
Interpretation:
For the given methanol oxidation reaction the
Concept introduction:
Free energy (or) entropy change is the term that is used to explain the total energy content in a thermodynamic system that can be converted into work. The free energy is represented by the letter G. All spontaneous process is associated with the decrease of free energy in the system. The equation given below helps us to calculate the change in free energy in a system.
Where,
(c)

Answer to Problem 20.93P
Methanol oxidation reaction standard free energy values is
Explanation of Solution
The oxidation reaction of methanol is,
Standard enthalpy change is,
The enthalpy change for the reaction is calculated as follows,
Hence, the enthalpy changes
Entropy change
Calculate the change in entropy for this reaction as follows,
Where,
The
Calculate the Free enrgy change
Standared Free energy change equation is,
Calculated enthalpy and entropy values are
These values are plugging above standard free energy equation,
Therefore, the given oxidation reaction standard free energy values is
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Chapter 20 Solutions
Chemistry: The Molecular Nature of Matter and Change - Standalone book
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