explain lucas test

Asked by  | 6th Jul, 2008, 02:34: PM

Expert Answer:

This test is used for differentiate between Primary, Secondary & Tertiary. In this test Luca’s reagent (anhydrous Zinc Chloride + Conc. HCl) is treated with unknown alcohol at room temperature.


The alcohol react with HCl to form an alkyl chloride which is being insoluble I water forms a turbidity.
a)If turbidity forms immediately then alcohol is tertiary.
b)If turbidity forms within five minutes then alcohol is secondary.  
b)If there is no turbidity at room temperature the then alcohol is primary.        

Answered by  | 6th Jul, 2008, 07:55: PM

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