AQA A2 Chemistry C25 Nomenclature And Isomerism Kerboodle Answers

This page contains the AQA A2 Chemistry Nomenclature And Isorism Questions and kerboodle answers for revision and understanding .This page also contains the link to the notes and video for the revision of this topic.

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C25.1 Naming organic compounds AQA A2 Chemistry Nomenclature And isorism Kerboodle Answers: Page No. 146

1 a b 2,4-dimethylpentane. 2 a CH₃CH₂CH₂OH Propan-1-ol b CH₃CH(Cl)CH₃ 2-chloropropane c CH₃CH₂CH= CHCH₂CH₃ Hhex-3-ene d CH₃CH₂OH Ethanol e C₄H₉COOH? Pentanoic acid

25.2 Optical isomerism AQA A2 Chemistry Nomenclature And isorism Kerboodle Answers : Page No. 149

1 B 2 3

25.3 Synthesis of optically active compounds AQA A2 Chemistry Nomenclature And isorism Kerboodle Answers : Page No. 153

1 a 2-hydroxybutanoic acid b Yes, the carbon to which the -OH group is bonded has four different groups attached to it. 2 a 2-methyl-2-hydroxypropanoic acid

No, it has no carbon to which four different groups are attached. 3 This carbon atom does not have four different groups attached to it. Banner 2

Practice questions: Page No.

1 2–aminopropanoic acid or 2–aminopropionic acid 2 Optically inactive OR Equal mixture of enantiomers / optical isomers Planar carbonyl group (stated or drawn) Attack from above or below (either side) 3 (a) Optical Equal mixture of enantiomers Plane polarised light Rotated in opposite/different directions (b) Carbocation Planar Attack from either side equally likely 4 (a) 2-methylbutan-1-ol (b) Optical (c) 5 (a) Same molecular formula and same structure but atoms are arranged differently in space. (b) No free rotation about the C=C pent-2-ene (c) 2-hydroxypropanoic acid Optical (d) Plane Polarised light. Rotated by the same amount in opposite directions. Banner 3

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