how will you convert phthalic acid to phthalic anhydride
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Answer : By the dehydration, we can convert phthalic acid into phthalic anhydride.
Explanation :
As we know that the phthalic acid have dicarboxylic acid where two carboxylic groups are seperated by two or three carbon atoms, on heating it undergo elimination of water molecule to form acid anhydrides. This process is known as dehydration. Dehydration means the loss of water molecule.
The reaction are shown below.
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