Ch.14 - Chemical EquilibriumWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Equilibrium Expressions

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Sections
Chemical Equilibrium
ICE Chart
Le Chatelier's Principle
The Reaction Quotient
Additional Practice
Equilibrium Expressions

Solution: Consider the following reaction at a certain temperature. 2H2O (g) ⇌ 2H 2 (g) + O2 (g)An equilibrium mixture of the reaction at that same temperature was found to contain 0.416 M of water vapor, H2O,

Problem

Consider the following reaction at a certain temperature. 

2H2O (g) ⇌ 2H (g) + O2 (g)

An equilibrium mixture of the reaction at that same temperature was found to contain 0.416 M of water vapor, H2O, 0.398 M oxygen gas, O2, and 0.472 M hydrogen gas, H 2. Determine the value of the equilibrium constant, Kc, for this reaction.

A. 1.09

B. 0.452

C. 0.512

D. 0.432

E. 0.309