Question
How is ethanoic acid obtained from ethanol? Write down the chemical equation of the reaction involved.
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Answer
Ethanoic acid is obtained from ethanol by the means of oxidation reaction. When ethanol is heated with alkaline potassium permanganate solution (or acidified potassium dichromate solution), it gets oxidised to ethanoic acid. It is called an oxidation reaction because oxygen is added to it during this conversion.
$\text{CH}_3\text{CH}_2\text{OH}+2[\text{O}]\xrightarrow[{\text{or}\ \text{acidified}\text{K}_2}\text{Cr}_2\text{O}_7]{ \ \ \ \ \ \ \ \ \ \ \ \ \ {\text{Alkaline}\text{Kmno}_4;\text{Heat}}\ \ \ \ \ \ \ \ \ \ \\ \ \ \ \ \ \ }\text{CH}_3\text{COOH}+\text{H}_2\text{O}$
$\text{CH}_3\text{CH}_2\text{OH}+2[\text{O}]\xrightarrow[{\text{or}\ \text{acidified}\text{K}_2}\text{Cr}_2\text{O}_7]{ \ \ \ \ \ \ \ \ \ \ \ \ \ {\text{Alkaline}\text{Kmno}_4;\text{Heat}}\ \ \ \ \ \ \ \ \ \ \\ \ \ \ \ \ \ }\text{CH}_3\text{COOH}+\text{H}_2\text{O}$
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