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Question
Give a simple chemical test to distinguish between the following pair of compounds:
Ethanal and Propanal
Solution
Ethanal gives the iodoform test, but propanal does not.
\[\ce{CH3CHO + \underset{Hypoiodite}{\underset{Sodium}{3NaOI}} ->[NaOH/I2][Heat] HCOONa + \underset{yellow ppt}{CHI3\downarrow} + 2NaOH}\]
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