PP Presentation
Key Concepts from Chapter 6: Thermochemistry
- heat transfer - specific heat
- phase transitions - heats of fusion, vaporization, etc
- First law of thermodynamics DE = q - w
- endothermic versus exothermic reactions
- enthalpy change in chemical reactions
- Hess’s law
- standard molar enthalpies of formation
DHrxn = S DHf(products) - S DHf (reactants)
- bond energies
- DHrxn = S D(bonds broken) - S D(bonds made)