Catalysis (AQA A-Level Chemistry): Flashcards

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Catalysis
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Why transition metals are effective catalysts

Variable oxidation states allow them to gain or lose electrons easily

Phase of heterogeneous catalyst vs reactants

Different phase

Phase of homogeneous catalyst vs reactants

Same phase

Catalyst in Contact Process

Vanadium(V) oxide (V2O5\text{V}_2\text{O}_5)

Catalyst poisoning

Impurities block active sites, reducing efficiency

Purpose of support medium

Increase surface area, reduce costs

Fe2+\text{Fe}^{2+}/Fe3+\text{Fe}^{3+} role in catalysis

Facilitate electron transfer

Autocatalysis definition

Reaction product acts as catalyst

Rate pattern in autocatalysis

Increases as product accumulates

Location of heterogeneous catalysis

Catalyst surface at active sites

Explore AQA A-Level Chemistry Revision Notes by Topics

Properties of Period 3 Elements & their Oxides (A Level only)

Transition Metals (A Level only)

Reactions of Ions in Aqueous Solution (A Level only)

Explore AQA A-Level Chemistry Model Answers by Topics

Properties of Period 3 Elements & their Oxides (A Level only)

Transition Metals (A Level only)

Reactions of Ions in Aqueous Solution (A Level only)

Explore AQA A-Level Chemistry Quizzes by Topics

Properties of Period 3 Elements & their Oxides (A Level only)

Transition Metals (A Level only)

Reactions of Ions in Aqueous Solution (A Level only)

Explore AQA A-Level Chemistry Exam Questions by Topics

Properties of Period 3 Elements & their Oxides (A Level only)

Transition Metals (A Level only)

Reactions of Ions in Aqueous Solution (A Level only)

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