
Concept explainers
a)
Interpretation:
The value of
Concept introduction:
Standard reduction potential: The voltage associated with a reduction reaction at an electrode when all solutes are 1M and all gases are at 1 atm. The hydrogen electrode is called the standard hydrogen electrode (SHE).
Standard emf:
Where both
a)

Explanation of Solution
The given half-reactions (1) and (2) are,
Equation (3) is obtained by addition of Equation (1) and (2) gives,
Therefore,
b)
Interpretation:
Gibb’s free energy
Concept Introduction:
Gibb’s free energy: The energy available to do work and also used to determine the spontaneity of a reaction. The energy released by the overall system.
The Gibb’s free energy is,
b)

Explanation of Solution
Predict
The given half-reactions (1) and (2) are,
For equation (1),
For equation (2),
Therefore, the Gibb’s free energy
c)
Interpretation:
Gibb’s free energy
Concept Introduction:
Gibb’s free energy: The energy available to do work and also used to determine the spontaneity of a reaction. The energy released by the overall system.
The Gibb’s free energy is,
c)

Explanation of Solution
The given half-reactions (1) and (2) are,
As known,
By substituting (b) into (a) gives,
The
Thus,
The calculated Gibb’s free energy
Hence,
Therefore, the calculated
d)
Interpretation:
The
Concept Introduction:
Gibb’s free energy: The energy available to do work and also used to determine the spontaneity of a reaction. The energy released by the overall system.
The Gibb’s free energy is,
d)

Explanation of Solution
The given half-reactions (1) and (2) are,
As known,
By substituting (b) into (a) gives,
The
Thus,
The calculated Gibb’s free energy
Hence,
Thus, the calculated
Calculation for
Therefore, the calculated value of
e)
Interpretation:
The relationship between
Concept Introduction:
Standard reduction potential: The voltage associated with a reduction reaction at an electrode when all solutes are 1M and all gases are at 1 atm. The hydrogen electrode is called the standard hydrogen electrode (SHE).
Standard emf:
Where both
e)

Explanation of Solution
The given half-reactions (1) and (2) are,
Equation (3) is obtained by addition of Equation (1) and (2) gives,
From the calculation method,
The addition of equation (1) and (2) gives the overall reaction of (3), that indicates the
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Chapter 21 Solutions
Chemistry: The Molecular Nature of Matter and Change - Standalone book
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