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Organic Chemistry
Quick questions on Isomerism and organic structure: Singapore A-Level H2 Chemistry
5short 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 structural (constitutional) isomerism?Show answer
Structural isomers have the same molecular formula but a different connectivity of atoms. The three types:
What are properties of enantiomers?Show answer
The two enantiomers are identical in all ordinary physical properties except that they rotate the plane of plane-polarised light by equal amounts in opposite directions. They react identically with achiral reagents but can behave very differently with other chiral species, which is crucial in biology and pharmacy.
What is q1?Show answer
Name the compound . [1 mark]
What is q2?Show answer
State which of propan-1-ol and methoxyethane shows functional group isomerism with the other, and give their shared molecular formula. [2 marks]
What is q3?Show answer
Identify the chiral centre, if any, in 2-hydroxypropanoic acid (lactic acid), . [2 marks]
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