
Calculate ΔSsurr for each of the reactions in Problem 14.14 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 14.20QP
The given reaction is found to be a spontaneous process with
Explanation of Solution
To record the given data
Given,
To calculate
The
To calculate
To calculate
The
To calculate
is calculated by plugging in the values of
(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 14.20QP
The given reaction is found to be a non-spontaneous process with
Explanation of Solution
To record the given data
Given,
To calculate
The
To calculate
To calculate
The
To calculate
Since,
(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 14.20QP
The given reaction is found to be a spontaneous process with
Explanation of Solution
To record the given data
Given,
To calculate
The
To calculate
To calculate
The
To calculate
Since,
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Chapter 14 Solutions
Chemistry Atoms First, Second Edition
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