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

16. Chemical Equilibrium

Intro to Chemical Equilibrium

General Chemistry

16. Chemical Equilibrium

Intro to Chemical Equilibrium

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Multiple Choice

What is the equilibrium-constant expression for the reaction N2(g) + 3H2(g) ⇌ 2NH3(g)?

Kc = [NH3]^2 / ([N2][H2]^3)

Kc = [N2][H2] / [NH3]^2

Kc = [N2][H2]^3 / [NH3]^2

Kc = [NH3] / ([N2][H2])

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Verified step by step guidance

Identify the balanced chemical equation for the reaction: \( \text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g) \).

Understand that the equilibrium constant expression \( K_c \) is derived from the concentrations of the products and reactants at equilibrium.

For the reaction \( aA + bB \rightleftharpoons cC + dD \), the general form of the equilibrium constant expression is \( K_c = \frac{[C]^c[D]^d}{[A]^a[B]^b} \).

Apply this formula to the given reaction: \( K_c = \frac{[\text{NH}_3]^2}{[\text{N}_2][\text{H}_2]^3} \).

Verify that the exponents in the expression correspond to the coefficients in the balanced chemical equation: \( [\text{NH}_3]^2 \) for 2NH3, \( [\text{N}_2] \) for N2, and \( [\text{H}_2]^3 \) for 3H2.