Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

8. Thermochemistry

Endothermic & Exothermic Reactions

General Chemistry

8. Thermochemistry

Endothermic & Exothermic Reactions

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Multiple Choice

Which of the following comparisons or contrasts between endergonic and exergonic reactions is false?

Exergonic reactions are non-spontaneous, while endergonic reactions are spontaneous.

Endergonic reactions require energy input to proceed, whereas exergonic reactions release energy.

Endergonic reactions have a positive Gibbs free energy change, while exergonic reactions have a negative Gibbs free energy change.

Endergonic reactions are associated with an increase in free energy, while exergonic reactions are associated with a decrease in free energy.

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Verified step by step guidance

Understand the definitions of endergonic and exergonic reactions. Endergonic reactions require an input of energy to proceed and are non-spontaneous, while exergonic reactions release energy and are spontaneous.

Recall the concept of Gibbs free energy change (ΔG). Endergonic reactions have a positive ΔG, indicating that they require energy input, whereas exergonic reactions have a negative ΔG, indicating that they release energy.

Consider the spontaneity of reactions. Spontaneous reactions occur without external energy input, which is characteristic of exergonic reactions. Non-spontaneous reactions require energy input, characteristic of endergonic reactions.

Analyze the statement: 'Exergonic reactions are non-spontaneous, while endergonic reactions are spontaneous.' This statement contradicts the definitions of endergonic and exergonic reactions.

Review the other statements: 'Endergonic reactions require energy input to proceed, whereas exergonic reactions release energy,' 'Endergonic reactions have a positive Gibbs free energy change, while exergonic reactions have a negative Gibbs free energy change,' and 'Endergonic reactions are associated with an increase in free energy, while exergonic reactions are associated with a decrease in free energy.' These statements are consistent with the definitions of endergonic and exergonic reactions.