Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 36m
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

15. Chemical Kinetics

Average Rate of Reaction

General Chemistry

15. Chemical Kinetics

Average Rate of Reaction

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Multiple Choice

Which of the following expressions correctly represents the average rate of appearance of a product in a chemical reaction?

Rate = Δ[Reactant]/Δt

Rate = -Δ[Reactant]/Δt

Rate = -Δ[Product]/Δt

Rate = Δ[Product]/Δt

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Verified step by step guidance

Understand the concept of reaction rate: The rate of a chemical reaction is a measure of how quickly reactants are converted into products. It can be expressed in terms of the change in concentration of reactants or products over time.

Identify the expression for the rate of appearance of a product: The rate of appearance refers to how quickly the concentration of a product increases over time. This is represented by the change in concentration of the product divided by the change in time.

Recognize the correct mathematical expression: The average rate of appearance of a product is given by the formula:

Δ [P] / Δ t

, where

Δ

represents the change in concentration and

t

represents time.

Differentiate between appearance and disappearance rates: The rate of disappearance of a reactant is typically negative because the concentration of reactants decreases over time, whereas the rate of appearance of a product is positive as the concentration of products increases.

Apply the correct expression to the problem: Given the options, the correct expression for the average rate of appearance of a product is