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12.5—Why entropy changes occur during: i changes of state ii dissolving of a solid ionic lattice iii reactions in which there is

Syllabus
2017
Objective
12.5
Level
A2

—Why entropy changes occur during: i changes of state ii dissolving of a solid ionic lattice iii reactions in which there is

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.

Use —why entropy changes occur during: i changes of state ii dissolving of a solid ionic lattice iii reactions in which there is to connect the rule to the data and decision in the question.

This matters because —why entropy changes occur during: i changes of state ii dissolving of a solid ionic lattice iii reactions in which there is determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —why entropy changes occur during: i changes of state ii dissolving of a solid ionic lattice iii reactions in which there is to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —Why entropy changes occur during: i changes of state ii dissolving of a solid ionic lattice iii reactions in which there is is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.

ConceptA-Level Edexcel Chemistry A2