Relationship between Cell Potential and Gibbs Energy Change NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Relationship between Cell Potential and Gibbs Energy Change MCQ Questions


1.
The relationship between standard Gibbs free energy change (ΔG°) and standard cell potential (E°_cell) is:
A.
ΔG° = −nFE°_cell
B.
ΔG° = −n E°_cell / F
C.
ΔG° = nFE°_cell
D.
ΔG° = −F E°_cell / n
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ANSWER :
A. ΔG° = −nFE°_cell
2.
For a non-standard state cell, the relation between ΔG and E_cell is:
A.
ΔG = nFE_cell
B.
ΔG = nFE_cell / RT
C.
ΔG = −nFE°_cell
D.
ΔG = −nFE_cell
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ANSWER :
D. ΔG = −nFE_cell
3.
In ΔG° = −nFE°_cell, the symbol F represents:
A.
Frequency factor
B.
Free energy
C.
Faraday's constant = 96485 C mol⁻¹
D.
Force
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ANSWER :
C. Faraday's constant = 96485 C mol⁻¹
4.
In the equation ΔG° = −nFE°_cell, 'n' refers to:
A.
Number of moles of electrolyte
B.
Number of electrons exchanged in the balanced cell reaction
C.
Number of half-cells
D.
Number of ions in solution
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ANSWER :
B. Number of electrons exchanged in the balanced cell reaction
5.
The maximum amount of electrical work that can be obtained from a galvanic cell at constant T and P equals:
A.
+nFE_cell
B.
−nFE_cell
C.
−ΔS
D.
+RT ln K
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ANSWER :
A. +nFE_cell
6.
If E°_cell is positive, then ΔG° is:
A.
Cannot be determined
B.
Positive
C.
Negative
D.
Zero
😑 View Answer Rough Work Error
ANSWER :
C. Negative