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

Solution: Consider the following reaction: H2(g) + I2(g) ⇌ 2HI(g)Complete the following table. Assume that all concentrations are equilibrium concentrations in M.T(oC)  [H2] (M)left[ {{f{H}}_{f{2}} } ight]   [I

Solution: Consider the following reaction: H2(g) + I2(g) ⇌ 2HI(g)Complete the following table. Assume that all concentrations are equilibrium concentrations in M.T(oC)  [H2] (M)left[ {{f{H}}_{f{2}} } ight]   [I

Problem

Consider the following reaction: H2(g) + I2(g) ⇌ 2HI(g)
Complete the following table. Assume that all concentrations are equilibrium concentrations in M.

T(oC)  [H2] (M)   [I2] (M)  [HI] (M)    Kc
25  0.0355  0.0388 0.922   –
340- 4.60×10−2  0.390 90.6 
445 4.90×10−2  4.72×10−2     –
 50.2


Find Kc at 25 oC.

Solution

 H2(g) + I2(g) ⇌ 2HI(g)

The formula for the equilibrium constant Kc is simply the concentration of the products over the concentration of the reactants with the coefficient of the balanced reaction as the exponent of each concentration term. 

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