What does a positive Delta G value indicate about a reaction?

Coupling Reactions and Delta G Concepts

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Chemistry
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10th - 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 reaction is thermodynamically unfavorable.
The reaction has no intermediate.
The reaction will occur spontaneously.
The reaction is thermodynamically favorable.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is required for two reactions to be coupled?
They must share an intermediate.
They must be in the same phase.
They must have the same Delta G value.
They must have the same reactants.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the context of Hess's Law, what is an intermediate?
A byproduct that is not used in the reaction.
A catalyst that speeds up the reaction.
A reactant that is never consumed.
A product of one reaction that becomes a reactant in another.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of multiplying the Delta G value by a coefficient in a reaction?
To decrease the pressure of the reaction.
To increase the temperature of the reaction.
To adjust the reaction to match the desired coefficients.
To change the phase of the reaction.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the intermediate in a coupled reaction?
It is produced and consumed, canceling out.
It remains unchanged throughout the reaction.
It is only produced and not consumed.
It is only consumed and not produced.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why was the second example of coupling reactions considered easier?
The reactions were already balanced.
The reactions had no intermediates.
The reactions had the same Delta G value.
The reactions did not require any adjustments.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the overall Delta G value when reactions are successfully coupled?
Positive, indicating an unfavorable process.
Zero, indicating no change in energy.
Negative, indicating a favorable process.
Undefined, as it depends on the conditions.
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