1. QUIZ: Thermochemistry
Explain enthalpy (or heat) change
Identify types and uses: Hrxn, Hfo, Hc
Use Hrxn to determine if rxn is endo/exothermic
Write thermochemical equation (two formats)
Use Table I to determine stability of product
More exo; lower energy product; higher stability
Perform calculations using heat of reaction
Basic Definition: Hrxn = Hproducts - Hreactants
Calculate Hrxn given heats of formation of prod/reactants
State and use Hess’s Law
Calculate Hrxn from bond energies
Define the term entropy and predict if a given reaction leads to an increase or decrease in entropy.
Calcuate Srxn for a chemical change
State the two driving forces in nature; define spontaneous process
Use Gibbs free-energy change to predict if rxn is spontaneous
Calcuate Grxn for a chemical change