What is the main product of the oxidation of Ethanol (CH₃CH₂OH) using excess acidified Potassium dichromate (K₂Cr₂O₇) under reflux?

Ethanal
Ethanoic acid
Ethyl ethanoate
Carbon dioxide

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Primary alcohols are oxidized first to aldehydes (ethanal) and then further to carboxylic acids (ethanoic acid) when heated under reflux with excess oxidant.

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