Reaction Feasibility (AQA A-Level Chemistry): Flashcards

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Reaction Feasibility
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Gibbs free energy equation

ΔG=ΔHTΔS\Delta G = \Delta H - T\Delta S

Condition for a reaction to be feasible

ΔG\Delta G is zero or negative

Feasibility when ΔH\Delta H is -ve and ΔS\Delta S is +ve

Feasible at all temperatures

Feasibility when ΔH\Delta H is +ve and ΔS\Delta S is -ve

Not feasible at any temperature

Feasibility when ΔH\Delta H is -ve and ΔS\Delta S is -ve

Feasible at low temperatures only

Feasibility when ΔH\Delta H is +ve and ΔS\Delta S is +ve

Feasible at high temperatures only

ΔG\Delta G when ΔH\Delta H is -ve and ΔS\Delta S is +ve

Always negative

ΔG\Delta G when ΔH\Delta H is +ve and ΔS\Delta S is -ve

Always positive

Factors affecting reaction feasibility

Enthalpy change (ΔH\Delta H) and entropy change (ΔS\Delta S)

Applications of reaction feasibility understanding

Industrial synthesis and biochemical processes

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