describe factors that affect Use a of absorption versus Specimen Paper article: Chemistry Review the colour of transition concentration to determine the Unit 5 Question 6 Colorimetry (Volume 12, metal ions concentration of the solution. (QSP.5.6) edition 3) describe how colorimetry Use a colorimeter to produce a June 2002 Unit 5 can be used to find the calibration curve and then find the Question 3 RSC booklet on concentration of coloured concentration of a coloured solution, (QW02.5.03) colorimetry from Gifted & ions in solution. eg containing copper(II) ions (AO2 - Talented Chemistry: Apply knowledge and understanding; AT a - Use appropriate apparatus to RSC Spectral School with record a range of measurements; AT range of resources: d - Use laboratory apparatus for a variety of experimental techniques; PS 3.1 - Plot and interpret graphs; MS3.2 - Plot two variables from experimental or other data). 3.2.5.5 Variable oxidation states Time Learning activity with opportunity to Assessment Learning outcome Resources Learning objective taken develop skills opportunities Know what happens when 2.5 Nuffield Science Data Students should react an acidified June 2006 Unit 5 Students should be able to: vanadate(V) is reduced by weeks solution of ammonium vanadate(V) Question 1 Book (free download): describe and explain what with zinc to observe colour changes , (QW06.5.01) zinc in acidic solution. happens when identify vanadium species and write June 2005 Unit 5 vanadate(V) ions are redox reactions for each reduction Question 5 How the potential for a reduced by zinc in acidic Chemistry Data Book reaction (AO1 - Demonstrate (QS05.5.05) solution transition metal is affected (Starck, Wallace, knowledge and understanding; AT k June 2003 Unit 5 by the pH and ligand. understand how the McGlashan) ISBN: - Safely and carefully handle solids Question 2 potential of a transition 9780719539510 and liquids, including corrosive, (QS03.5.02) metal ion is affected by changes in pH and ligand
describe factors that affect the colour of transition metal ions describe how colorimetry can be used to find the concentration of coloured ions in solution. Use a of absorption versus concentration to determine the concentration of the solution. Use a colorimeter to produce a calibration curve and then find the concentration of a coloured solution, eg containing copper(II) ions (AO2 - Apply knowledge and understanding; AT a - Use appropriate apparatus to record a range of measurements; AT d - Use laboratory apparatus for a variety of experimental techniques; PS 3.1 - Plot and interpret graphs; MS3.2 - Plot two variables from experimental or other data). Specimen Paper Unit 5 Question 6 (QSP.5.6) June 2002 Unit 5 Question 3 (QW02.5.03) Chemistry Review article: Colorimetry (Volume 12, edition 3) RSC booklet on colorimetry from Gifted & Talented Chemistry: RSC Spectral School with range of resources: 3.2.5.5 Variable oxidation states Learning objective Time taken Learning outcome Learning activity with opportunity to develop skills Assessment opportunities Resources Know what happens when vanadate(V) is reduced by zinc in acidic solution. How the potential for a transition metal is affected by the pH and ligand. 2.5 weeks Students should be able to: describe and explain what happens when vanadate(V) ions are reduced by zinc in acidic solution understand how the potential of a transition metal ion is affected by changes in pH and ligand Students should react an acidified solution of ammonium vanadate(V) with zinc to observe colour changes , identify vanadium species and write redox reactions for each reduction reaction (AO1 - Demonstrate knowledge and understanding; AT k - Safely and carefully handle solids and liquids, including corrosive, June 2006 Unit 5 Question 1 (QW06.5.01) June 2005 Unit 5 Question 5 (QS05.5.05) June 2003 Unit 5 Question 2 (QS03.5.02) Nuffield Science Data Book (free download): Chemistry Data Book (Starck, Wallace, McGlashan) ISBN: 9780719539510
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