What happens when the $1^{\circ}$ and $2^{\circ}$ alcohols are oxidised by anhydrous chromium trioxide $(C r O_{3})$ ? Write chemical equations.

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Solution

Primary alcohols are oxidised to aldehydes. Aldehydes are further oxidised to carboxylic acids.
$C H_{3} - C H_{2} - O H + [O] C r O_{3} - -- \to C H_{3} - C H O + H_{2} O$
$C H_{3} - C H O + [O] C r O_{3} - -- \to C H_{3} - C O O H$
Secondary alcohols are oxidised to ketones. Ketones resists further oxidation.
$C H_{3} - C H (O H) - C H_{3} + [O] C r O_{3} - -- \to C H_{3} - C O - C H_{3} + H_{2} O$

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What happens when the 1∘ and 2∘ alcohols are oxidised by anhydrous chromium trioxide (Cr O3)? Write chemical equations.

What happens when the $1^{\circ}$ and $2^{\circ}$ alcohols are oxidised by anhydrous chromium trioxide $(C r O_{3})$ ? Write chemical equations.