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Standard XII
Chemistry
Preparation of Haloarenes
Question

How will you obtain the following from benzoic acid?
Benzoyl chloride.

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Solution
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Preparation of benzoyl chloride. Benzoyl chloride could be prepared by reacting thionyl chloride or phosphorus pentachloride with benzoic acid. Dry benzoic acid are treated in a flask, finally pulverized phosphorus pentachloride.

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