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2 năm trước
Hỗn hợp A gồm (X và Y; X là axit no đơn chức mạch hở, Y là axit đơn chức 1 nối đôi, mạch hở và tỉ lệ mol là 1:1). Trung hoà X và Y bằng lượng NaOH vừa đủ, cô cạn thu muối. Nung muối trong bình tới phản ứng hoàn toàn, thu được 2,12 gam rắn và hỗn hợp (CO2 + H2O). Trong đó khối lượng CO2 và nước kém nhau 2,96 gam. Công thức của X, Y là?
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