define Lucas test. it is from chemistry
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- Lucas test is used to differentiate and categorize primary, secondary and tertiary alcohols using a solution of anhydrous zinc chloride in concentrated hydrochloric acid. This solution is commonly referred to as the Lucas reagent.
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The Lucas test in alcohols is a test to differentiate between primary, secondary, and tertiary alcohols. It is based on the difference in reactivity of the three classes of alcohols with hydrogen halides via an SN1 reaction: ROH + HCl → RCl + H2O. ... An equimolar mixture of ZnCl2 and concentrated HCl is the reagent.
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