Module 15: Second Law of Thermodynamics

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Which law is based on the principle that 'heat does not spontaneously flow from a colder body to a hotter body'?

First Law of Thermodynamics

Second Law of Thermodynamics (correct)

Third Law of Thermodynamics

Zeroth Law of Thermodynamics

What does entropy measure in a substance?

Volume

Temperature

Degree of randomness (correct)

Pressure

In which state of matter is entropy typically the highest?

Solids

Aqueous ions

Liquids

Gases (correct)

When does a positive change in entropy occur?

Solid reactants form liquid or gaseous products Signup and view all the answers

Which type of reaction often results in a decrease in entropy?

Gasous reactants form solid products Signup and view all the answers

What happens to energy according to the Second Law of Thermodynamics?

Energy is transformed, and more and more of it is wasted over time Signup and view all the answers

Which property is a measure of the disorder present in a substance or system?

Entropy Signup and view all the answers

In the context of reactions, what does it mean if a reaction is classified as endothermic?

It absorbs heat Signup and view all the answers

What is the minimum work required to carry out a nonspontaneous process in terms of Gibbs Free Energy?

ΔG > 0 Signup and view all the answers

Which term represents the free energy change when a compound is formed from its elements in their most thermodynamically stable states at standard state conditions?

Standard Free Energy of Formation Signup and view all the answers

What is the sign convention for Gibbs Free Energy change (ΔG) in an exergonic reaction?

Negative Signup and view all the answers

Which of the following is true about reversible reactions?

They reach equilibrium where reactant and product concentrations stabilize Signup and view all the answers

Module 15: Second Law of Thermodynamics

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Questions and Answers

Which law is based on the principle that 'heat does not spontaneously flow from a colder body to a hotter body'?

What does entropy measure in a substance?

In which state of matter is entropy typically the highest?

When does a positive change in entropy occur?

Which type of reaction often results in a decrease in entropy?

What happens to energy according to the Second Law of Thermodynamics?

Which property is a measure of the disorder present in a substance or system?

In the context of reactions, what does it mean if a reaction is classified as endothermic?

What is the minimum work required to carry out a nonspontaneous process in terms of Gibbs Free Energy?

Which term represents the free energy change when a compound is formed from its elements in their most thermodynamically stable states at standard state conditions?

What is the sign convention for Gibbs Free Energy change (ΔG) in an exergonic reaction?

Which of the following is true about reversible reactions?

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