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Organic Chemistry and Analysis (OA1.1 Stereoisomerism)
Quick questions on Stereoisomerism (OA1.1) - Eduqas A-Level Chemistry
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is z is not always cis in name?Show answer
When the priority groups differ from the simple cis/trans picture, use the Cahn-Ingold-Prelog priorities; Z means higher-priority groups on the same side.
What are chiral centre needs four different groups?Show answer
A carbon with two identical substituents is not chiral; check all four groups before concluding the molecule is optically active.
What is q1?Show answer
State the two conditions required for a molecule to show E/Z isomerism. [2 marks]
What is q2?Show answer
Explain why a pair of enantiomers cannot be separated by fractional distillation. [1 mark]
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