Ethyl benzoate là hợp chất chính tạo mùi thơm của quả anh đào (cherry). Một học sinh tiến hành tổng hợp ethyl benzoate từ benzoic acid và ethyl alcohol theo phương trình hoá học sau: Sau thí nghiệm, tiến hành phân tách sản phẩm. Ghi phổ hồng ngoại của ethyl benzoate, benzoic acid và ethyl alcohol. Cho biết số sóng hấp thụ đặc trưng của một số liên kết trên phổ hồng ngoại như sau: Liên kết O-H (alcohol) O-H (carboxylic acid) C=O (ester, carboxylic acid) Số sóng (cm-1) 3650 - 3200 3300 - 2500 1780
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