When ethanoic acid reacts with phosphorus trichloride, what are the products?
Correct answer D. Ethanoyl chloride and phosphonic acid (H₃PO₃)
Explanation
3CH₃COOH + PCl₃ → 3CH₃COCl + H₃PO₃. PCl₃ replaces the OH group of the acid with Cl, and phosphonic acid is left as the inorganic by-product. POCl₃ forms only when PCl₅ is used.
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