Ai giúp em giải bài này với ạ em cảm ơn rất nhiều Cho 10,7 gam hỗn hợp gồm ancol no, đơn chức, mạch hở A và phenol (tỉ lệ mol 2:1) tác dụng với dung dịch nước brom dư thu được 16,55 gam kết tủa trắng. a. Tính khối lượng từng chất trong hỗn hợp. b. Xác định công thức cấu tạo của A. Biết rằng nếu cho A tác dụng với CuO dư đun nóng thì thu được sản phẩm hữu cơ là xeton

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