State and explain the conditions for cis/trans isomerism and how this differs from E/Z isomerism.
cis/trans isomerism requires a double bond for restricted rotation about the bond, two different groups on each carbon of the double bond and at least one of the groups on each carbon of the double bond are the same. E/Z only differs by the fact that the isomers can be assigned E or Z as long as all groups attached to each carbon of the double bond are different and a double bond is still required.
EC
Related Chemistry A Level answers
All answers ▸Describe the structure of benzene with reference to delocalisation and an analysis of the Kekule structure.
Alcohols can be converted into alkenes in an elimination reaction. The elimination of H2O from pentan-2-ol forms a mixture of organic products. Give the names and structures of all the organic products in the mixture.
What does ‘aromatic’ mean?
What is the trend in the first ionisation energy of the peroid 3 elements from sodium to argon.