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Question

Which of the following method/(s) will give acetic anhydride?

A
Anhydrous acetic acid is dehydrated in presence of P2O5
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B
Anhydrous acetic acid is dehydrated in presence of anhydrous ZnCl2
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C
Both of the above
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D
None of the above
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Solution

The correct option is C Both of the above
Anhydrous acetic acid is dehydrated in presence of dehydrating agent such as P2O5 or ahydrous ZnCl2 to obtain acetic anhydride.
2CH3COOHheat−−P2O5(CH3CO)2O

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