1. Week 24
Explain that entropy is a measure of the disorder of a system, and that a system becomes energetically more stable when it becomes more disordered.
Explain: the difference in entropy of a solid and a gas; the change when a solid lattice dissolves; the change in a reaction in which there is a change in the number of gaseous molecules.
Calculate the entropy change for a reaction given the entropies of reactants and products.
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2. Week 24 Increasing entropy © Pearson Education Ltd 2009
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3. State and use the relationship ∆G = ∆H – T∆S.
Week 24
Explain that the tendency of a process to take place depends on temperature, T, the entropy change in the system, ∆S, and the enthalpy change, ∆H, with the surroundings.
Explain that the balance between entropy and enthalpy change is the free energy change, ∆G.
State and use the relationship ∆G = ∆H – T∆S.
Explain how endothermic reactions are able to take place spontaneously.
© Pearson Education Ltd 2009
This document may have been altered from the original