Question
Fri July 20, 2012 By:
 

sir,i want to know about idoform test?

Expert Reply
Fri July 20, 2012
Formation of yellow precipitate of idoform is used as a test for certain aldehydes and ketones.which have methyl group bonded to carbonyl group or compounds that can form this group on oxidation .
This test is performed by heating the substance with aqueous sodium carbonate and iodine solution. On warming the reaction mixture ,yellow precipitate of idoformmmmmmm indicates positive iodoform.
 
CH3CH2OH +4I2 +3Na2CO3=CHI3 +HCOONa +5NaI +2H2O+3CO2
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