What does the change in free energy (ΔG) represent in a chemical reaction?

Thermodynamics and Electrochemistry Concepts

Interactive Video
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Chemistry, Physics, Science
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11th - 12th Grade
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Hard

Patricia Brown
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The energy lost as heat in a reaction
The total energy change in a reaction
The maximum amount of useful work obtainable from a reaction
The minimum amount of energy required for a reaction
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation ΔG° = -nFE°, what does 'n' represent?
The number of moles of ions in solution
The number of moles of electrons transferred
The number of moles of products
The number of moles of reactants
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the Faraday constant (F) used in calculating ΔG?
It is subtracted from the number of moles of electrons
It is multiplied by the number of moles of electrons and the cell potential
It is divided by the cell potential
It is added to the cell potential
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between ΔG and the equilibrium constant (K)?
ΔG is directly proportional to K
ΔG is inversely proportional to K
ΔG is equal to RT times the natural log of K
ΔG is equal to the natural log of K
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the ideal gas constant (R) value typically used in electrochemistry calculations?
6.02 J/mol·K
9.81 J/mol·K
7.22 J/mol·K
8.31 J/mol·K
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the Nernst equation help determine?
The equilibrium constant at standard conditions
The cell potential under non-standard conditions
The number of moles of electrons transferred
The temperature of the reaction
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of a large equilibrium constant (K) value?
The reaction goes to completion
The reaction is endothermic
The reaction is at equilibrium
The reaction is slow
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