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

6. Chemical Quantities & Aqueous Reactions

Redox Reactions

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Redox Reactions

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Multiple Choice

In the context of redox reactions, which molecule accepts electrons at the end of the electron transport chain to form water?

ATP

Carbon dioxide (CO2)

Oxygen (O2)

NADH

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Verified step by step guidance

Understand the context of the problem: The electron transport chain is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane.

Identify the role of oxygen in the electron transport chain: Oxygen acts as the final electron acceptor in the chain. It is essential for the process of oxidative phosphorylation, which occurs in the mitochondria of eukaryotic cells.

Recognize the chemical reaction involved: At the end of the electron transport chain, oxygen accepts electrons and combines with protons to form water. The reaction can be represented as:

O_{2} + 4 e_{-} + 4 H_{+} \to 2 H_{2} O

Clarify why other molecules are not the final electron acceptors: ATP is a product of the electron transport chain, not an electron acceptor. Carbon dioxide (CO2) is a product of cellular respiration but not involved in the electron transport chain. NADH is an electron donor, not an acceptor.

Conclude with the importance of oxygen: Oxygen's role as the final electron acceptor is crucial for the production of ATP through oxidative phosphorylation, highlighting its importance in cellular respiration and energy production.