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How do you make acetic anhydride?

Answer 1

Brooklyn Barber

There are various ways to produce acetic anhydride.

A condensation process involving two molecules of acetic acid

#"CH"_3"COOH" + "CH"_3"COOH" rarr ("CH"_3"CO")_2"O" + "H"_2"O"#

#2.# Reacting carbon monoxide with methyl acetate:

#"CH"_3"CO"_2"CH"_3 + "CO" rarr ("CH"_3"CO")_2"O"#

#3.# Reacting acetic acid with ethenone:

#"H"_2"C=C=O" + "CH"_3"COOH" → ("CH"_3"CO")_2"O"#

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Answer 2

Delilah Anderson

Acetic anhydride can be made by reacting acetic acid with an acid chloride, such as acetyl chloride, in the presence of a catalyst like pyridine or phosphoric acid. The reaction typically takes place under reflux conditions and can be represented by the equation:

CH3COOH + (CH3CO)2O → (CH3CO)2O + CH3COOH

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.