Investigating the reaction between Unit 5 Q8 Describe what a I– and S2O82– using different homogeneous catalyst is catalysts. June 2012 and understand how Unit 5 Q8b reactions proceed through an intermediate species. June 2011 Unit 5 Q8a Describe, with the aid of equations, how Fe2+ June 2003 catalyses the reaction Unit5 Q3 between I– and S2O82– and how the reaction between C2O42– and MnO4– is autocatalytic 3.2.6 2.0 Understand that metal ions Students record observations and January 2013 AQA Reactions of metal ions in Reactions of ions in weeks exist as metal-aqua ions in equations for the relevant Unit 5 Q5 aqueous solution resource: aqueous solution. aqueous solution. reactions based on their practical work. Specimen Paper The nature of The hydrolysis of CHM5 Q8 ions. ions in aqueous solution Students predict equations and giving acidic solutions. acid-base behaviour for other June 2004 The relative acidity of similar reactions (eg Co(H2O)6]2+ Unit 5 Q4 metal-aqua ions. Explain why [M(H2O)6]3+ and [Cr(H2O)6]3+ ions are more acidic than June 2013 The reaction of [M(H2O)6]2+ ions. Students revise tests for cations Unit 5 Q7 ions (Fe2+, Cu2+, and anions met in first year. Al3+, Fe3+) with bases Describe and explain June 2012 OH–, NH3, CO32– reactions of [M(H2O)6]2+ Practical activities: Unit 5 Q7 (M = Cu, Fe) and Test-tube reactions of M(H2O)6]2+ [M(H2O)6]3+ (M = Al, Fe) (M = Cu, Fe) and [M(H2O)6]3+ (M January 2012
Describe what a homogeneous catalyst is and understand how reactions proceed through an intermediate species. Describe, with the aid of equations, how Fe2+ catalyses the reaction between I– and S2O82– and how the reaction between C2O42– and MnO4– is autocatalytic Investigating the reaction between I– and S2O82– using different catalysts. Unit 5 Q8 June 2012 Unit 5 Q8b June 2011 Unit 5 Q8a June 2003 Unit5 Q3 3.2.6 Reactions of ions in aqueous solution. The nature of ions. The relative acidity of metal-aqua ions. The reaction of ions (Fe2+, Cu2+, Al3+, Fe3+) with bases OH–, NH3, CO32– 2.0 weeks Understand that metal ions exist as metal-aqua ions in aqueous solution. The hydrolysis of ions in aqueous solution giving acidic solutions. Explain why [M(H2O)6]3+ ions are more acidic than [M(H2O)6]2+ ions. Describe and explain reactions of [M(H2O)6]2+ (M = Cu, Fe) and [M(H2O)6]3+ (M = Al, Fe) Students record observations and equations for the relevant reactions based on their practical work. Students predict equations and acid-base behaviour for other similar reactions (eg Co(H2O)6]2+ and [Cr(H2O)6]3+ Students revise tests for cations and anions met in first year. Practical activities: Test-tube reactions of M(H2O)6]2+ (M = Cu, Fe) and [M(H2O)6]3+ (M January 2013 Unit 5 Q5 Specimen Paper CHM5 Q8 June 2004 Unit 5 Q4 June 2013 Unit 5 Q7 June 2012 Unit 5 Q7 January 2012 AQA Reactions of metal ions in aqueous solution resource:
AQA-7405-B-SOW.DOCX