Question

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example of chemical test to distinguish between ethanol and ethyl bromide?♥️​

Answer 1

Answer:

Ethyl bromide on reaction with NaOH gives ethanol. Ethyl alcohol on iodoform test gives yellow precipitate. Bromobenzene on reaction with NaOH gives phenol. ... i.e. no precipitation

Answer 2

Answer

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(i) Ethyl alcohol and sec-propyl alcohol are distinguished by Lucas reagent (a mixture of conc. HCl and anhydrous zinc chloride). Secondary alcohols such as sec-propyl alcohol gives turbidity within 5-10 minutes. Primary alcohols such as ethyl alcohol do not give turbidity at all, at room temperature.

ROH+HCl

ZnCl

2

RCl+H

2

O

(ii) Acetaldehyde and acetic acid are distinguished by Tollen's reagent (ammoniacal silver nitrate solution). Tollens' reagent oxidises acetaldehyde to acetic acid and the reagent itself is reduced to silver. This test is known as silver mirror test and is used to distinguish aldehdyes from ketones.