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Multiple Choice

Oxidation of a primary alcohol with Cr2O7^2-/H+ under reflux yields which product?

Strong oxidants in acidic solution with heating push primary alcohols all the way to carboxylic acids. The dichromate in acid (Cr2O7^2-/H+) first oxidizes the alcohol to an aldehyde, but under reflux the aldehyde is rapidly further oxidized to the carboxylic acid. So, with this reagent under heating, the major product is a carboxylic acid.

Strong oxidants in acidic solution with heating push primary alcohols all the way to carboxylic acids. The dichromate in acid (Cr2O7^2-/H+) first oxidizes the alcohol to an aldehyde, but under reflux the aldehyde is rapidly further oxidized to the carboxylic acid. So, with this reagent under heating, the major product is a carboxylic acid.