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Answer:
The alcohol is a primary alcohol.
Explanation:
Chromic acid oxidizes primary alcohols to carboxylic acids and secondary alcohols to ketones but does not react with tertiary alcohols under mild conditions. Therefore, from the Chromic acid test, the class of alcohol is either primary or secondary.
Lucas reagent (a solution of anhydrous ZnCl₂ in conc. HCl)
Primary alcohols do not react readily at room temperature with the Lucas reagent, secondary alcohols react after some minutes while tertiary alcohols react immediately.
Since the alcohol is oxidized by chromic acid and does not react with Lucas reagent, it is a primary alcohol.
A solution of anhydrous zinc chloride in hydrochloric acid is called the Lucas reagent. The alcohol that does not react with Lucas's reagent is a primary alcohol.
What is primary alcohol?
The primary alcohol is the compounds that have their hydroxy group (-OH) attached to the primary carbon atom. Its molecular formula is, [tex]\rm CH_{2}OH[/tex].
The hydroxyl carbon of the primary alcohol contains only one R group in its structure. Methanol and ethanol are examples of primary alcohol.
Primary alcohol does not react with Lucas's reagent and no turbidity is formed as carbocation of the primary alcohol is too unstable.
Therefore, primary alcohol does not react with Lucas reagent.
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