Energy Lecture 4 Hesss Law & Review Calculating Enthalpy Change A theoretical way to determine H for a chemical reaction is provided by Hesss law, which.
ENTHALPY (H) Accounts for heat flow in chemical reactions happening at constant pressure when work is performed due to P-V change. The enthalpy of a substance.
Prentice-Hall © 2002General Chemistry: Chapter 8Slide 1 of 32 Chapter 8: The Atmospheric Gases and Hydrogen Philip Dutton University of Windsor, Canada.
Chapter 17 Energy. Energy u The ability to do work or cause a change u Work- using force to move something Symbol is w u Thermochemistry- studies energy.
Notes: Equilibrium: Le Châteliers Principle (18.1 & 18.2) Topics: Reversible Reactions Equilibrium Constant Le Châteliers Principle.
Enthalpies of Formation An enthalpy of formation, H f, is defined as the enthalpy change for the reaction in which a compound is made from its constituent.
Ecosystems and Energy Chapter 3. What is Ecology? Ecology – study of the interactions among organisms and between organisms (biotic) and their abiotic.
AH 13-03-2010. Objectives Introduce the second law of thermodynamics. Discuss thermal energy reservoirs, reversible and irreversible processes, heat engines,
Thermal energy is transferred through the hydrosphere from warmer latitudes to cooler polar regions largely due to global winds.
Reaction Rates (cont.) Energy in a Reaction (p.11)
Energy in a Reaction (cont.) (p.17). Review Draw a graph of enthalpy vs. reaction proceeds for this rxn: R P + 60 kJ.
UNIT VI Types of Chemical Reactions. VI.5 TYPES OF CHEMICAL REACTIONS When we classify reactions by how atoms are rearranged, there are 5 MAJOR TYPES.