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

Energy Diagrams

GOB Chemistry

7. Energy, Rate and Equilibrium

Energy Diagrams

Previous problemNext problem

Struggling with GOB Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following statements is true regarding the energy diagram provided?

i. The reaction is endothermic.
ii. The activation energy is +10 kJ.
iii. The reaction releases energy.
iv. The enthalpy of the reaction is –25 kJ.

I only

II and IV

I and III

II, III and IV

Previous problemNext problem

Verified step by step guidance

Examine the energy diagram provided. The y-axis represents Gibbs Free Energy, and the x-axis represents the reaction coordinate.

Identify the initial and final energy levels on the diagram. The initial energy level is around 40 kJ, and the final energy level is around 15 kJ.

Calculate the change in Gibbs Free Energy (ΔG) by subtracting the final energy from the initial energy: ΔG = Final Energy - Initial Energy. This will help determine if the reaction is endothermic or exothermic.

Determine the activation energy by identifying the peak of the energy curve. The activation energy is the difference between the peak energy and the initial energy level.

Analyze the statements: i. The reaction is endothermic (ΔG > 0), ii. The activation energy is +10 kJ, iii. The reaction releases energy (ΔG < 0), iv. The enthalpy of the reaction is –25 kJ. Compare these with your findings from the diagram.