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Benzamide can be preapred by the action ...

Benzamide can be preapred by the action of concentrated ammonia upon benzoyl chloride.
`underset("Benzoyl chloride")(C_(6)H_(5)COl)+2NH_(3) to underset("Benzamide")(C_(6)H_(5)_CONH_(2))+NH_(4)Cl`
In such experiment 65cc of concentrated ammonia (in excess) was treated with 15g of benzoyl chloride to give 11.1g of pure benzamide. Molar masses: benzoyl chloride (141), (benzamide)(121). The percentage yield of benzamide is:

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