Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

7. Energy, Rate and Equilibrium

Bond Energy

GOB Chemistry

7. Energy, Rate and Equilibrium

Bond Energy

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Multiple Choice

Consider the following equation:

Determine the bond enthalpy value for the F–S bond.

-2301.0 kJ/mol

900.5 kJ/mol

-1171.5 kJ/mol

1301.0 kJ/mol

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Verified step by step guidance

Identify the bonds broken and formed in the reaction. In the reactants, we have 2 S-H bonds and 3 F-F bonds. In the products, we have 4 S-F bonds and 2 F-H bonds.

Calculate the total energy required to break the bonds in the reactants. Use the bond energies provided: 2 S-H bonds (2 x 347 kJ/mol) and 3 F-F bonds (3 x 159 kJ/mol).

Calculate the total energy released when new bonds are formed in the products. Use the bond energies provided: 4 S-F bonds (unknown bond energy) and 2 F-H bonds (2 x 565 kJ/mol).

Apply the formula for the enthalpy change of the reaction: ΔH = (Energy of bonds broken) - (Energy of bonds formed). Substitute the given ΔH value (-1301 kJ/mol) and solve for the unknown S-F bond energy.

Rearrange the equation to solve for the S-F bond energy. This will involve isolating the term that includes the S-F bond energy and solving for its value.