An alkene, 2-methylpropene, is subjected to acid-catalysed hydration to yield a major product 'A'. When a small amount of product 'A' is treated with Lucas reagent at room temperature, what visual observation is expected?

Step-by-step solution

Acid-catalysed hydration of 2-methylpropene follows Markovnikov's rule, where the hydroxyl group attaches to the more substituted carbon of the double bond. This yields 2-methylpropan-2-ol as the major product 'A'. 2-Methylpropan-2-ol is a tertiary alcohol. Lucas reagent is a mixture of concentrated HCl and anhydrous ZnCl ₂ . Tertiary alcohols react very rapidly with Lucas reagent to form insoluble alkyl chlorides, which results in the immediate appearance of turbidity at room temperature. Answer: Turbidity appears