Ch.6 - Thermochemistry WorksheetSee 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 these reactions: X(s) +1/2 O2(g) → XO(s) H=-639.7 XCO3(s) → XO(s)+CO2(g) H=+349.7   What is H(rxn) for this reaction? X(s)+1/2 O2(g)+CO2(g) --> XCO3(s)  

Problem

Given these reactions:

X(s) +1/2 O2(g) → XO(s)

H=-639.7

XCO3(s) → XO(s)+CO2(g)

H=+349.7

 

What is H(rxn) for this reaction?

X(s)+1/2 O2(g)+CO2(g) --> XCO3(s)