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Give the industrial preparation of acetic anhydride. How many other anhydrides be prepared from acetic anhydride? |
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Answer» Solution :`CH_(3)COOH+underset("Ketene")( H_(2)C=C=O)to(CH_(3)CO)_(2)O` [Ketene is prepared by PYROLYSIS of acetone, `CH_(3)COCH_(3)OVERSET(973K)toCH_(4)+CH_(2)=C=O`] When the mixture of acetic anhydride and the carboxylic actd is distilled, anhydrides are FORMED. `2RCOOH+(CH_(3)CO)_(2)Oto(RCO)_(2)O+2CH_(3)COOH` |
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