Draw the structural formulae for the E and Z stereoisomers of pent-2-ene.
[2]
2-bromo-1-chloropropene is a colourless, odourless liquid.
A student drew the two stereoisomers of 2-bromo-1-chloropropene below.
State what is incorrect with their diagrams of these two stereoisomers.
[2]
Draw the E and Z stereoisomers for 2,3-dichlorobut-2-ene.
[2]
Compound E is a derivative of compound C.
Suggest why the cis/trans naming system fails with compound E.
[1]
The structure of one optical isomer of a chlorofluorocarbon is shown below.
Draw the structure of the other enantiomer.
[1]
The figure below identifies a different carbon, b, in the organic compounds structure.
Complete the figure below to show the 3D representations of the optical isomers formed at carbon b.
[2]
Carvone is an optically active molecule which is found widely in plants, mostly in caraway seeds and spearmint leaves. The structure is shown below.
Mark on the diagram using an asterisk (*) the chiral carbon which causes this structure to exhibit optical isomerism.
[1]
