Unit 8: Thermodynamics
(Enthalpy & Entropy)
Key Learning Targets
Define enthalpy, ∆H.
Calculate the enthalpy for a given chemical reaction using heats of formation.
Calculate the enthalpy for a given chemical reaction using Hess’s Law.
Explain what is meant by ‘spontaneous reaction”
Define entropy, ∆S.
Relate changes in entropy to changes in state, temperature, number of gas particles and characteristics of molecules.
Calculate change in entropy, using a reference table.
State the two driving forces for spontaneous reactions as enthalpy and entropy.
Define free energy.
Calculate free energy from a reference table of from values of enthalpy and entropy.
Use enthalpy, entropy and free energy to predict if a reaction will occur spontaneously.
State what values of enthalpy, entropy and free energy are favorable for a spontaneous reaction.
Enthalpy Notes Guide
Hess's Law Notes Guide
Entropy & Spontaneous Reaction Notes Guide
Heat of Reaction WS
Hess's Law WS #1
Hess's Law WS #2
Thermo WS KEY
Hess's Law Lab
Enthalpy Notes PPT
Hess's Law Notes PPT
Entropy & Spontaneous Reaction Notes PPT