Iodoform test
Formation of yellow precipitate of iodoform is used as a test for certain aldehydes and ketones that have methyl group bonded to carbonyl group CH 3 CO- or compounds that can form this group on oxidation e.g. This test is performed by heating the substance with aque..
Formation of yellow precipitate of iodoform is used as a test for certain aldehydes and ketones that have methyl group bonded to carbonyl group CH 3 CO- or compounds that can form this group on oxidation e.g. This test is performed by heating the substance with aque..Physical Properties of Iodoform
It is a yellow colored crystalline solid with melting point 392 K. It has a characteristic unpleasant odor. It is insoluble in water but readily dissolves in ethyl alcohol and ether. Due to liberation of free iodine it has an antiseptic action..
Analytical Tests for Ethanol
Ethanol can be identified by the fruity odour it emits when heated gently with sodium acetate and concentrated sulphuric acid. This is due to the formation of ethyl acetate. Iodoform test: When a few drops of alcohol is warmed with iodine and potasium hydroxide, yellow precipita..
Chemical Properties
Chemical properties of iodoform ar..
Reduction
Iodoform can be reduced with P and HI to give methylene iodide...
Iodoform can be reduced with P and HI to give methylene iodide...From propanone (acetone)
The reactions taking place are similar to the above reactions, finally giving rise to iodoform: ..
The reactions taking place are similar to the above reactions, finally giving rise to iodoform: ..Derivatives of Haloalkanes and Haloarenes - Dichloroethanes
Polyhalogen derivatives of alkanes are the halogen derivatives of alkanes containing more than one halogen atom per molecule. For example, ethylene dichloride, ethylidene chloride, chloroform, iodoform, carbon tetrachloride, e..
From ethyl alcohol (ethanol)
With ethyl alcohol, the reactions take place in three steps as: Oxidation occurs to give: Iodination takes place: The complete reaction may be written as:..
With ethyl alcohol, the reactions take place in three steps as: Oxidation occurs to give: Iodination takes place: The complete reaction may be written as:..Haloform Reaction
Acetone on reaction with iodine in the presence of sodium hydroxide, yields yellow crystalline precipitate of iodoform..
Acetone on reaction with iodine in the presence of sodium hydroxide, yields yellow crystalline precipitate of iodoform..Carbylamine reaction
When iodoform is warmed with primary amine and alcoholic KOH, it forms isocyanide or carbylamine, which has very unpleasant smell...
When iodoform is warmed with primary amine and alcoholic KOH, it forms isocyanide or carbylamine, which has very unpleasant smell...See what our Users say :
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