Question

Give a test used to identify unsaturation of an organic compound.

Answer 1

Answer. Unsaturated compounds consist of a double or triple bond. They can be identified by KMnO4 test. Alkenes decolorizes the
3CH2=CH2 + 2KMn04 + 4H2O———> 3H2C——CH2 + 2MnO2 + 2KOH
                                          OH   OH
pink colour of acidified dilute solution of potassium permanganate

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