isomerism

Question 1

electrophile

Answer 1

electron pair acceptor

Question 2

explain why bromine, a non-polar molecule, is able to react with propene

Answer 2

e- rich C=C causes induced dipole in Br2

Question 3

Explain the differences between structural isomerism and stereoisomerism. Use
examples to show how compounds with the molecular formula C4H8 exhibit
stereoisomerism and the three types of structural isomerism.

Answer 3

1) structural isomers: molecules with same molecular formula but different structure
stereoisomers: molecules with same structural formula but different arrangement of atoms in space

2) streoisomers:
lack of rotation around C=C bond
structures of E and Z-but-2-ene

3) structural isomers:
>diff C chain, eg, methyl-propene & but-1-ene/but-2-ene
>diff position of functional group, eg, but-1-ene and but-2-ene
>diff functional group, eg, cyclobutane & but-1-ene/but-2-ene/methylpropene

Question 4

Describe how you distinguish between separate samples of the two enantiomers of the branched chain aldehyde C5H10O

Answer 4

Use Plane polarised light

rotates (the plane of) in opposite directions