What is a stereoisomer?

Stereoisomers are molecules with the same structural formula (same number of each type of atom bonded together in the same order e.g. carbon bonded to carbon bonded to oxygen) but with the atoms arranged differently in space. It can be difficult to see how they differ from one another- try imagining a right glove and a left glove- they are mirror images of each other but are NOT the same- they cannot be superimposed upon each other. 

LG

Related Chemistry A Level answers

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Why is phenol more easily nitrated than Benzene?


A 25 cm3 sample of an unknown concentration of sulfuric acid was titrated against 0.1 mol dm-3 sodium hydroxide. The average titre was 20 cm3. Calculate the concentration of the sulfuric acid.


When propanal is reacted with potassium cyanide under weakly acidic conditions the resulting mixture does not rotate plane polarised light. Explain this observation.


Explain why bromine reacts more readily with phenol than benzene