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: The space shuttle carries about 7.30×104 kg of solid aluminum fuel, which is oxidized with ammonium perchlorate according to the following reaction: 10 Al(s) + 6 NH4ClO4(s) → 4 Al2O3(s) + 2 AlCl3(s) + 12 H2O(g) + 3 N2(g)The space shuttle also carries about 6.07×105 kg of oxygen (which reacts with hydrogen to form gaseous water). Assuming that aluminum and oxygen are the limiting reactants, determine the total energy produced by these fuels. (ΔH˚f for solid ammonium perchlorate is –295 kJ/mol{ m{kJ}} / { m{mol}})

Problem
The space shuttle carries about 7.30×104 kg of solid aluminum fuel, which is oxidized with ammonium perchlorate according to the following reaction: 10 Al(s) + 6 NH4ClO4(s) → 4 Al2O3(s) + 2 AlCl3(s) + 12 H2O(g) + 3 N2(g)


The space shuttle also carries about 6.07×105 kg of oxygen (which reacts with hydrogen to form gaseous water). Assuming that aluminum and oxygen are the limiting reactants, determine the total energy produced by these fuels. (ΔH˚f for solid ammonium perchlorate is –295 kJ/mol)