preparation of iodoform

Laboratory preparation It is prepared in the laboratory by the action of iodine on ethyl alcohol or acetone, in the presence of alkali. This is called haloform reactio..

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..

1. Iodine is used as antiseptic in the form of an alcoholic solution, which is known as tincture of iodine. 2. It is also used for the preparation of iodoform and potassium iodide. 3. Iodide ion is necessary for the normal functioning of the thyroid gland insufficient iodide in..

On heating, iodoform decomposes to give iodine vapor. This reaction is accelerated by moisture, air or ligh..

Iodoform, when heated with silver powder gives acetylene...

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 precipitate of ..

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..

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:..

Ketones having at least one methyl group linked to the carbonyl carbon atom (i.e., methyl ketones) are oxidised by sodium hypohalite to sodium salts of carboxylic acids with one carbon atom less than that of the ketones. The methyl group is converted to haloform, which appears as a yellow precipit..

On boiling with aqueous or alcoholic KOH, iodoform gives potassium formate...