
Calculate ΔSsurr for each of the reactions in Problem 14.15 and determine if each reaction is spontaneous at 25°C.
(a)

Interpretation:
The entropy change of surroundings
Concept introduction:
Entropy is the measure of randomness in the system. Standard entropy change in system
Where
Enthalpy is the amount energy absorbed or released in a process. The enthalpy change in a system
Where,
Using the value for the change in enthalpy in a system and the temperature, we can calculate
The summation of the change in entropy of the system and surroundings will give the value for the change in enthalpy in the universe
Answer to Problem 14.21QP
The given reaction is found to be a spontaneous process with
Explanation of Solution
To record the given data
Given,
Explanation:
The given data in the problem statement is recorded as shown above.
To calculate
Explanation:
The
To calculate
Explanation:
To calculate
Explanation:
The
To calculate
Explanation:
Since ,
The entropy change of surroundings
(b)

Interpretation:
The entropy change of surroundings
Concept introduction:
Entropy is the measure of randomness in the system. Standard entropy change in system
Where
Enthalpy is the amount energy absorbed or released in a process. The enthalpy change in a system
Where,
Using the value for the change in enthalpy in a system and the temperature, we can calculate
The summation of the change in entropy of the system and surroundings will give the value for the change in enthalpy in the universe
Answer to Problem 14.21QP
The given reaction is found to be a spontaneous process with
Explanation of Solution
Explanation
To record the given data
Given,
Explanation:
The values are recored as shown above.
To calculate
Explanation:
The
To calculate
Explanation:
To calculate
Explanation:
The
To calculate
Explanation:
Since,
The entropy change of surroundings
(c)

Interpretation:
The entropy change of surroundings
Concept introduction:
Entropy is the measure of randomness in the system. Standard entropy change in system
Where
Enthalpy is the amount energy absorbed or released in a process. The enthalpy change in a system
Where,
Using the value for the change in enthalpy in a system and the temperature, we can calculate
The summation of the change in entropy of the system and surroundings will give the value for the change in enthalpy in the universe
Answer to Problem 14.21QP
(c) The given reaction is found to be a spontaneous process with
Explanation of Solution
To record the given data
Given,
Explanation:
The given values are recorded as shown above.
To calculate
Explanation:
The
To calculate
Explanation:
To calculate
Explanation:
The
To calculate
Explanation:
Since,
The entropy change of surroundings
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Chapter 14 Solutions
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