Unsaturated Draw the structural Students draw and name isomers hydrocarbons with an formulas of E and Z of and C6H12, and identify electron rich isomers. which exhibit E–Z isomerism. double bond. Apply the CIP priority rules 3.3.1.3 to E and Z isomers. Isomerism. E–Z isomerism is a form of stereo-isomerism and occurs as a result of restricted rotation about the planar double bond. Cahn–Ingold–Prelog (CIP) priority Required practical 5 Distillation of a product from a reaction. 3.3.4.2 0.8 Outline the mechanisms for Students write balanced equations June 2012 Reaction mechanism 1: Addition reactions of weeks these reactions by drawing for electrophilic addition reactions. Unit 2 Q7b alkenes. the structures of the species involved and curly Students write balanced June 2010 Electrophilic addition arrows to represent the mechanism steps for different Unit 2 Q6a reactions of alkenes movement of electron pairs. alkenes, and identify (and explain with HBr, H2SO4 and the existence of) major and minor January 2003 Br2 Understand that the products where appropriate. Unit 3 Q2a formation of a covalent bond is shown by a curly January 2005
Unsaturated hydrocarbons with an electron rich double bond. 3.3.1.3 Isomerism. E–Z isomerism is a form of stereo-isomerism and occurs as a result of restricted rotation about the planar double bond. Cahn–Ingold–Prelog (CIP) priority Draw the structural formulas of E and Z isomers. Apply the CIP priority rules to E and Z isomers. Students draw and name isomers of and C6H12, and identify which exhibit E–Z isomerism. Required practical 5 Distillation of a product from a reaction. 3.3.4.2 Addition reactions of alkenes. Electrophilic addition reactions of alkenes with HBr, H2SO4 and Br2 0.8 weeks Outline the mechanisms for these reactions by drawing the structures of the species involved and curly arrows to represent the movement of electron pairs. Understand that the formation of a covalent bond is shown by a curly Students write balanced equations for electrophilic addition reactions. Students write balanced mechanism steps for different alkenes, and identify (and explain the existence of) major and minor products where appropriate. June 2012 Unit 2 Q7b June 2010 Unit 2 Q6a January 2003 Unit 3 Q2a January 2005 Reaction mechanism 1:
AQA-7404-B-SOW.DOCX