A) \[arihy.\,AlC{{l}_{3}}+conc.HCl\]
B) \[anhy.AlC{{l}_{3}}+\text{ }cone.\text{ }HN{{O}_{3}}\]
C) \[anhy.ZnC{{l}_{2}}\]
D) \[anhy.ZnC{{l}_{2}}cone.HCl\]
Correct Answer: D
Solution :
Lucas reagent is anhy. \[ZnC{{l}_{2}}+\] cone. \[HCl\]. It is used to distinguish between \[{{1}^{o}}\], \[{{2}^{o}}\], and \[{{3}^{o}}\] alcohols as follows: \[ROH+HCl\xrightarrow{conc.\,anly.\,ZnC{{l}_{2}}}RCl+{{H}_{2}}O\] If cloudiness appears immediately \[-{{3}^{o}}\] alcohol. If cloudiness appears with five minutes \[-{{2}^{o}}\] alcohol. If cloudiness appears only upon heating \[-{{1}^{o}}\] alcohol.
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