What is a key characteristic of a spontaneous process?
Spontaneous Processes

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Chemistry, Science, Physics
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11th Grade - University
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It occurs without any change in enthalpy.
It requires external energy to proceed.
It occurs without external energy input.
It always results in a decrease in entropy.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following indicates a spontaneous process?
Increase in both enthalpy and entropy
Decrease in both enthalpy and entropy
Decrease in enthalpy and increase in entropy
Increase in enthalpy and decrease in entropy
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does an equilibrium constant greater than 1 signify?
The reaction favors the reactants.
The reaction is nonspontaneous.
The reaction favors the products.
The reaction is at equilibrium.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the conversion of graphite to diamond considered nonspontaneous?
It occurs without any energy input.
It requires a large amount of energy and pressure.
It results in a decrease in entropy.
It happens instantly under normal conditions.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a spontaneous process, what happens to enthalpy and entropy?
Both enthalpy and entropy decrease
Both enthalpy and entropy increase
Enthalpy decreases, entropy increases
Enthalpy increases, entropy decreases
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a K value of less than 1 indicate about a reaction?
The reaction is at equilibrium.
The reaction favors the products.
The reaction is spontaneous.
The reaction is nonspontaneous.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of a negative change in enthalpy?
It means the reaction requires energy input.
It indicates an endothermic reaction.
It suggests a nonspontaneous process.
It implies the reaction is exothermic.
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