Transition Elements: Complex Ions, Variable Oxidation States and Catalysis · Semester 1
Catalytic Mechanisms of Transition Metals: Homogeneous and Heterogeneous
Students will learn that transition metals and their compounds can act as catalysts, speeding up reactions without being consumed, with simple examples.
Key Questions
- Construct a two-step catalytic cycle showing how Fe³⁺ ions catalyse the reaction between I⁻ and S₂O₈²⁻, using variable oxidation states to explain the lower activation energy of each step.
- Distinguish between heterogeneous and homogeneous catalysis in terms of adsorption, surface activation, and desorption steps, using the Haber process catalyst and a homogeneous transition metal example as contrasting cases.
- Evaluate the relative advantages of heterogeneous versus homogeneous catalysts in industrial chemistry, considering selectivity, ease of catalyst recovery, susceptibility to poisoning, and operating conditions.
MOE Syllabus Outcomes
MOE: Catalysts - MSMOE: Industrial Chemistry (Basic) - MS
Level: JC 2
Subject: Chemistry
Unit: Transition Elements: Complex Ions, Variable Oxidation States and Catalysis
Period: Semester 1
Suggested Methodologies
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