As an anhydride, It can be prepared by dehydrating its acid, i.e. Acetic acid, by strong dessicant such as Tetraphosphorus decaoxide (P4O10) : P4O10 + 12 CH3COOH ----> 4 H3PO4 + 6 (CH3CO)2O
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Acetic Acid is Vinegar. It is made similarly to making alcohol, by FERMINTATION. One or more vegetable products, in a water solution, is innoculated [or exposed to] one of many bactera which...
Since vinegar is dilute, first we have to boil it to make it concentrated. When acid is about 97% , keep it with phosphoric anhydride. As a powerful desiccant it will dehydrate Concentrated acetic...