
Concept explainers
(a)
Interpretation:
Standard enthalpies of the given reaction whether increases (or) decreases with increasing temperature should be decided.
Concept introduction:
Enthalpy is the amount energy absorbed or released in a process.
The enthalpy change in a system
Where,
Standard free energy change:
Standard free energy change is measured by subtracting the product of temperature and standard entropy change from the standard enthalpy change of a system.
(a)

Explanation of Solution
According to second law of
Where
Given enthalpy reaction is,
Plugging in
Therefore, the
(b)
Interpretation:
Standard enthalpies of the given reaction whether increases (or) decreases with increasing temperature should be decided.
Concept introduction:
Enthalpy is the amount energy absorbed or released in a process.
The enthalpy change in a system
Where,
Standard free energy change:
Standard free energy change is measured by subtracting the product of temperature and standard entropy change from the standard enthalpy change of a system.
(b)

Explanation of Solution
Second law of thermodynamic changes in enthalpy
Where
Given enthalpy reaction is,
Plugging in
Hence, the internal energy
As temperature increase and
(c)
Interpretation:
Standard enthalpies of the given reaction whether increases (or) decreases with increasing temperature should be decided.
Concept introduction:
Enthalpy is the amount energy absorbed or released in a process.
The enthalpy change in a system
Where,
Standard free energy change:
Standard free energy change is measured by subtracting the product of temperature and standard entropy change from the standard enthalpy change of a system.
(c)

Explanation of Solution
Second law of thermodynamic changes in enthalpy
Where
Given enthalpy reaction is,
Put in
Therefore, the
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Chapter 2 Solutions
Elements Of Physical Chemistry
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