

Thermodynamic Coupling and Delta G
Interactive Video
•
Chemistry
•
11th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a negative Delta G indicate about a chemical process?
The process is at equilibrium.
The process is thermodynamically favored.
The process is not thermodynamically favored.
The process requires external energy.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a thermodynamically favored process?
A broken egg reassembling itself.
Ice melting on a hot summer day.
Liquid water freezing on a hot day.
Water decomposing into hydrogen and oxygen at room temperature.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the Delta G value when a process is thermodynamically favored in one direction?
It becomes negative in the reverse direction.
It becomes positive in the reverse direction.
It becomes zero.
It remains unchanged.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a characteristic of a thermodynamically favored process?
It is energetically favorable.
It has a negative Delta G.
It occurs spontaneously.
It requires continuous energy input.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is thermodynamic coupling?
A process where enthalpy is changed.
A process where energy is conserved.
A process where two reactions are separated to increase efficiency.
A process where two reactions are combined to make a non-favored process favored.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't Hess's Law be applied directly to thermodynamic coupling?
Because it involves change in enthalpy, not Delta G.
Because it is only applicable at absolute zero.
Because it requires a catalyst.
Because it only applies to physical changes.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Delta G value for the decomposition of copper sulfide when coupled with sulfur and oxygen reaction?
0 KES per mole
-100 KES per mole
-214.2 KES per mole
214.2 KES per mole
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