Entropy changes in physical and chemical processes (13.14) | Edexcel A-level Chemistry — 9CH0 | KnowledgeSet

Entropy changes in physical and chemical processes

Chemistry · A-Level · Edexcel · Edexcel A-level Chemistry — 9CH0 · Specification point · 13.14 · Energetics II · Entropy

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Students should:
$understand why entropy changes occur during: i changes of state ii dissolving of a solid ionic lattice iii reactions in which there is a change in the number of moles from reactants to products Students should be able to discuss typical reactions in terms of disorder and enthalpy change, including: dissolving ammonium nitrate crystals in water reacting ethanoic acid with ammonium carbonate burning magnesium ribbon in air mixing solid barium hydroxide, Ba(OH)₂.8H₂O, with solid ammonium chloride.$

Students should:

understand why entropy changes occur during: i changes of state ii dissolving of a solid ionic lattice iii reactions in which there is a change in the number of moles from reactants to products Students should be able to discuss typical reactions in terms of disorder and enthalpy change, including: dissolving ammonium nitrate crystals in water reacting ethanoic acid with ammonium carbonate burning magnesium ribbon in air mixing solid barium hydroxide, Ba(OH)₂.8H₂O, with solid ammonium chloride.