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How are carboxylic acid prepared from Gr...

How are carboxylic acid prepared from Grigoard reagent?

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Grignard reagents are treated with dry ice [solid `CO_(2)`] followed by acid hydrolysis carboxylic acids are formed.
`R-mg-X+O=C=O rarr 0=underset(underset(R)(|))(C)-O^(H+)//-^(OH-)Mg-Xoverset(H_(2)O^(+))(rarr)R-CO-OH+Mg times (OH)`
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