Edexcel A-Level Chemistry A2 12.5 Why Entropy Changes Occur During Topic Practice

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Pearson Edexcel IAL Chemistry

Unit 4: Rates, Equilibria and Further Organic Chemistry

Topic 11: Kinetics

Topic 12: Entropy and Energetics

12.1 - That, since endothermic reactions can occur

12.2 - Entropy as a measure of disorder of a system in

12.3 - entropy of a substance increases with temperature,

12.4 - Interpret the natural direction of change as being

12.5 - Why entropy changes occur during

12.6 - total entropy change of any reaction is the sum of

12.7 - entropy change of the system for a reaction, Delta

12.8 - entropy change in the surroundings, and hence Delta

12.9 - feasibility of a reaction depends on

12.10 - Reactions can occur as long as Delta Stotal is

12.11 - And distinguish between the concepts of

12.SP1 - Further suggested practical: Investigate chemical

12.SP2 - Further suggested practical: dissolving a solid,

12.SP3 - Further suggested practical: gas evolution,

12.SP4 - Further suggested practical: exothermic reaction

12.SP5 - Further suggested practical: endothermic reaction

12.12 - the terms

12.13 - Construct Born-Haber cycles and carry out related

12.14 - comparison of the experimental lattice energy value

12.15 - Polarisation of anions by cations leads to some

12.16 - the terms 'enthalpy change of solution, Delta solH'

12.17 - Energy cycles and energy level diagrams to

12.18 - effect of ionic charge and ionic radius on the

12.19 - Entropy and enthalpy changes of solution values to

12.SP1 - Further suggested practical: Calculate the enthalpy

Topic 13: Chemical Equilibria

Topic 14: Acid-base Equilibria

Topic 15: Organic Chemistry: Carbonyls, Carboxylic Acids and Chirality

Unit 5: Transition Metals and Organic Nitrogen Chemistry

Topic 16: Redox Equilibria

Topic 17: Transition Metals and their Chemistry

Topic 18: Organic Chemistry – Arenes

Topic 19: Organic Nitrogen Compounds: Amines, Amides, Amino Acids and Proteins

Topic 20: Organic Synthesis

Unit 6: Practical Skills in Chemistry II

Practical Skills in Chemistry II

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