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buileduyenduyen
2 năm trước
Giúp mk zí cần gấp ạ🥺 theo pp NAP Cho 8,4 gam X chứa 2 este thuần chức, hở dốt cháy thu được 0,3 mol H2O. Thuỷ phân 8,4 gam X cần 120ml NaOH 1M thu được Y chứa 2 ancol hơn kém nhau 1Cvà Z chứa 2 muối của 2 axit cacbonxylic đơn chức hơn kém nhau 1C dẫn Y qua Na thấy khối lượng bình tăng 3,66 gam. Phần trăm khối lượng este có phân tử khối lớn trong X là: A. 22,18% B. 38,23% C. 47,14% D. 42,25%
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