Lucas Reagent is

A n h y d r o u s Z n C l_{2} + C o n c . H C l

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F e C l_{3} + F e

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C o n c . H C l + Z n

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A n h y . A l C l_{3} + Z n

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Solution

The correct option is A $A n h y d r o u s Z n C l_{2} + C o n c . H C l$
Lucas Reagent is an equi-molar mixture of concentrated hydrochloric acid and anhydrous zinc chloride used to distinguish between $1^{\circ}, 2^{\circ}, a n d 3^{\circ}$ alcohols.
If turbidity appears immediately, the alcohol is tertiary $(3^{\circ})$
If turbidity appears within five minutes, the alcohol is secondary $(2^{\circ})$
If turbidity appears only upon heating, the alcohol is primary $(1^{\circ})$
General RXN

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Similar questions

Q. Which of the following alcohol is most reactive with Lucas reagent

(C o n c . H C l + {Z n C l}_{2})

Q. From amongst the following alcohols the one that would react fastest with

c o n c . H C l

and anhydrous

Z n C l_{2}

, is:

Q. Assertion :Tertiary alcohols give turbidity immediately with Lucas reagent. Reason: A mixture of conc.HI + anhydrous

Z n C l_{2}

is called Lucas reagent

Lucas test of alcohols involves the following reaction $R - O H + C o n c . H C l A n h y d r o u s - ----- \to Z n C l_{2} R C l + H_{2} O$ (white turbidity) Select the incorrect statements for the lucas test

Q. The alcohol that produces turbidity immediately with

Z n {C l}_{2} / c o n c . H C l

at room temperature is:

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