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: Coal, which is primarily carbon, can be converted to natural gas, primarily CH4, by the following exothermic reaction:C(s) + 2 H2(g) ⇌ CH4(g)Which of the following will favor CH4 at equilibrium?a. add

Solution: Coal, which is primarily carbon, can be converted to natural gas, primarily CH4, by the following exothermic reaction:C(s) + 2 H2(g) ⇌ CH4(g)Which of the following will favor CH4 at equilibrium?a. add

Problem

Coal, which is primarily carbon, can be converted to natural gas, primarily CH4, by the following exothermic reaction:
C(s) + 2 H2(g) ⇌ CH4(g)

Which of the following will favor CH4 at equilibrium?
a. adding more C to the reaction mixture
b. adding more H2 to the reaction mixture
c. raising the temperature of the reaction mixture
d. lowering the volume of the reaction mixture
e. adding a catalyst to the reaction mixture
f. adding neon gas to the reaction mixture

Solution

According to Le Chatelier’s Principle, once a system in equilibrium is disturb, the system will readjust and relieve the stress introduced to maintain its equilibrium


The factors that affect equilibrium are:

1. Concentration

Introducing more gaseous reactants to the system will put stress on the reactant side of the system. To relieve the stress, the equilibrium will shift to the product side


Since H2 is a gaseous reactant, the equilibrium will shift forward and favor CH4.

Choice B is correct.


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