Which conditions are required to obtain a good yield of a carboxylic acid when ethanol is oxidized using potassium dichromate(VI), K2Cr2O7(aq)?I. Add sulfuric acidII. Heat the reaction mixture under refluxIII. Distill the product as the oxidizing agent is added

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	I and II only
B	II and III only
C	I and III only
D	I, II and III

Explanation:

Detailed explanation-1: -AI Recommended Answer: To obtain a good yield of a carboxylic acid when ethanol is oxidized using potassium dichromate (VI), KxCrzOxaq), the following conditions must be met: 1. Add sulfuric acid to the reaction mixture.

Detailed explanation-2: -The chemical equation of Ethanol with concentrated Sulphuric acid and Potassium dichromate is written as: C 2 H 5 OH + K 2 Cr 2 O 7 → conc H 2 SO 4 CH 3 CHO + K 2 Cr 2 O 7 → conc H 2 SO 4 CH 3 COOH Ethanol Ethanal Ethanoic acid.

Detailed explanation-3: -Ethyl alcohol on oxidation with acidified K2Cr2O7 gives CH3COOH.

Detailed explanation-4: -Primary alcohols and aldehydes are normally oxidized to carboxylic acids using potassium dichromate(VI) solution in the presence of dilute sulfuric acid.

Detailed explanation-5: -Acidified potassium dichromate is a strong oxidizing agent. It oxidizes ethanol to acetaldehyde.

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