Đốt cháy hoàn toàn 0,0854 mol hỗn hợp X (gồm metyl axetat, etyl axetat, metyl acrylat và hai hiđrocacbon mạch hở) cần vừa đủ 0,6844 mol O2, tạo ra 0,4778 mol CO2 và H2O. Mặt khác đốt cháy 28 gam X thì thu đưộcC2 và 1,7262 mol H2O. Nếu cho 4,8 gam X vào dung dịch Br2 dư thì số mol Br2 phản ứng tối đa là A. 0,016 mol B. 0,018 mol C. 0,02 mol D. 0,016 mol

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