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In the lab of Acidic Dichromate Oxidation of Alcohols: What would be required if you were...

In the lab of Acidic Dichromate Oxidation of Alcohols: What would be required if you were asked to isolate the oxidation products

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Answer #1

The oxidation of alcohols with acidic dichromate forms carboxylic acid or ketones

R-CH2-OH + Cr2O7^2- + H2O -----> R-COOH + Cr^3+ + SO4^2- + H2O

RCH(OH)-R + Cr2O7^2- + H2O -----> R-CO-R + Cr^3+ + SO4^2- + H2O

The prodcuts are carboxylic acids/ketone and Chromium sulfate

Carboxylic acid and ketone are organic in nature hence soluble in organic solvents like Ether, dichloromethane, chloroform etc while the prodcuts of dichromate are readily soluble in water. Thus the oxidized prodcuts can be separated using solvent extraction with an organic-aqueous mixture

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