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Iodoform Reaction. The iodoform test indicates the presence of an aldehyde or ketone in which one of the groups directly attached to the carbonyl carbon is a methyl group. Such a ketone is called a methyl ketone. In the iodoform test, the unknown is allowed to react with a mixture of iodine and base.Hydrogens alpha to a carbonyl group are acidic and will react with base to form the anion, which then reacts with iodine to form an alpha-iodo ketone.uch a ketone is called a methyl ketone. In the iodoform test, the unknown is allowed to react with a mixture of iodine and base. Hydrogens alpha to a carbonyl group are acidic and will react with base to form the anion, which then reacts with iodine to form an alpha-iodo ketone.
Iodoform Test. A positive reaction with sodium hydroxide and iodine as reagents produce iodoform, which is a substance that is pale yellow in colour. Iodoform occurs as solid at ordinary room temperature because of three iodine atoms that are present in the molecule resulting in an increase in the molar mass.ormation of haloform as a result of a chemical reaction involving the methyl ketone halogenation is a haloform reaction. Haloform reaction is used for the production of iodoform (CHI 3). I like to share this Escape Velocity Formula with you all through my article.