Question

How to convert Methanal to Ethanol ?

Answer 1

Reaction Of HCHO with grinard reagent CH3MgBr You Will Get Ethanol As Product.

Answer 2

Production of Ethanol from Methanal

• As per the given scenario, aldehyde has to be converted into alcohol. This process is done by treating the aldehyde with the Grignard agent in the process of dry ether.
• In the given case, the reactant is methanal and its molecular formula is HCHO.
• The product required is ethanol and its molecular formula is $H_3C-CH_2-OH$.

Steps involved in conversion:

1. As methanal is an aldehyde and the required product is ethanol which is an alcohol, it must be made to react with Grignard reagent ($CH_3-Mg-Br$) in the presence of dry ether.
2. It leads to the formation of an intermediate substance which on treatment with water yields ethanol and hydroxy magnesium bromide.

• The equation involved in the reaction is as follows:

$H C H O+C H_{3}-M g-B r \stackrel{\text { dry ether }}{\longrightarrow} C H_{3}-C H_{2}-O-M g B r$

$C H_{3}-C H_{2}-O-M g B r \stackrel{\mathbb{H}_{2} O}{\longrightarrow} C H_{3}-C H_{2}-O H+M g B r O H$

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