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What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.
Define the term entropy, S, as the number of possible arrangements of the particles and their energy in a given system.
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Predict and explain the sign of the entropy changes that occur: (a) during a change in state, e.g. melting, boiling and dissolving (and their reverse); (b) during a temperature change; (c) during a reaction in which there is a change in the number of gaseous molecules.
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Calculate the entropy change for a reaction, ΔS, given the standard entropies, S⦵, of the reactants and products, using ΔS⦵ = ΣS⦵(products) – ΣS⦵(reactants).
Use of ΔS⦵ = ΔS⦵surr + ΔS⦵sys is not required.
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