... học) công thức ba muối : A CH2=CH-COONa, HCOONa CH ≡ C-COONa B CH3-COONa, HCOONa CH3-CH=CH-COONa C HCOONa, CH ≡ C-COONa CH3-CH2-COONa D CH2=CH-COONa, CH3-CH2-COONa HCOONa Câu 42: Cho axit salixylic ... CH3CHO, CH3COONH4, CH3COOH, CH3COOC2H5 B C2H5OH, CH3COOH, CH3CHO, CH3COO-C2H5 C CH3CHO, C2H5OH, CH3COOH, CH3COOC2H5 D CH3COOH, CH3CHO, C2H5OH, CH3COOC2H5 Câu 72: Khi thủy phân este HCOOC(CH3)=CH2 ... là: A CH2=CH-COOCH3 B CH3COOCH=CH2 C HCOOCH=CH-CH3 D HCOOCH2CH=CH2 Câu 67: Cho sơ đồ sau: C4H10→X→Y→CH3COOC2H5 X, Y là: A CH4, CH3COOH B C2H4, C2H5OH C C2H4, CH3COOH D CH3COOH, CH3COONa Câu 68:...