Question

give characteristic test lucas ristics with alcohols.​

Answer 1

Answer:

Solution :

Lucas reagent is a mixture of concentrated HCI and anhydrous

. It is used to distinguish between primary , secondary and tertiary alcohols. <br> Alcohol with Lucas reagent forms an alkyl chkloride ,R -CI which is insoluble and gives cloudiness and forms separate layer. <br> The time required for cloudiness to appear is based on the type of the alcohol and its reactivity. <br> (1) Primary alcohol : It reacts with the Lucas reagent very slowly and on heating forms alkyl chloride . The separation of a layer takes place after a long time on heating . <br>

<br> (2) Secondary alcohol : It reacts with the Lucas reagent much faster to form alkyl chloride. The cloudiness and separtion of layer takes place after five minutes. <br>

<br> (3) Tertiary alcohol : It reacts immediately with the Lucas reagent at room temperature to form alkyl chloride. The cloudiness and separation of layer takes place instantaneously . <br>