Q20 of 50 Page 172

Write a test to differentiate between pentan-2-one and pentan-3-one.

One can differentiate between pentan-2-one and pentan-3-one by iodoform test.


Pentan-2-one have a –CO-CH3 group and therefore, forms a yellow precipitate of Iodoform. Pentan-2-one gives positive iodoform test, whereas, and pentan-3-one does not give positive iodoform test because they don’t have a –CO-CH3 group.




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