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: Given the following equilibrium constants at 427ºC,Na2O(s) ⇌ 2Na(l) + 1/2 O2(g)                K 1 = 2 x 10 -25NaO(g) ⇌ Na(l) + 1/2 O2(g)                K 2 = 2 x 10 -5Na2O2(s) ⇌ 2Na(l) + O2(g)      

Problem

Given the following equilibrium constants at 427ºC,

Na2O(s) ⇌ 2Na(l) + 1/2 O2(g)                K 1 = 2 x 10 -25

NaO(g) ⇌ Na(l) + 1/2 O2(g)                K 2 = 2 x 10 -5

Na2O2(s) ⇌ 2Na(l) + O2(g)                K 3 = 5 x 10 -29

NaO2(s) ⇌ Na(l) + O2(g)                K 4 = 3 x 10 -14

determine the values for the equilibrium constants for the following reactions:

b. NaO(g) + Na2O(s) ⇌ Na2O2(s) + Na(l)

(Hint: When reaction equations are added, the equilibrium expressions are multiplied.)