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: Calculate ΔH for the reaction C4H4(g) + 2H2(g) → C4H8(g), using the following information: ΔHcombustion for C4H4(g)= -2341 kJ/mol ΔHcombustion for C4H8(g)= -3071 kJ/mol ΔHcombustion for H2(g) = -286 kJ/mol a. -128 kJ b. -316 kJ c. -158 kJ d. -700 kJ e. -4810 kJ

Problem

Calculate ΔH for the reaction C4H4(g) + 2H2(g) → C4H8(g), using the following information:

ΔHcombustion for C4H4(g)= -2341 kJ/mol
ΔHcombustion for C4H8(g)= -3071 kJ/mol
ΔHcombustion for H2(g) = -286 kJ/mol

a. -128 kJ

b. -316 kJ

c. -158 kJ

d. -700 kJ

e. -4810 kJ