A.C₂H₄                        B.C₂H₅OH                     C.CH₃CHO                     D.CH₃COOH

A.C₂H₆                  B.C₂H₅OH                    C.C₂H₄O               D.C₂H₄O₂

A.C₂H₄             B.C₂H₅OH           C.CH₃CHO             D.CH₃COOH

A.CH₄                 B.C₂H₅OH                C.CH₃CHO              D.CH₃COOH

某有机物的蒸气，完全燃烧时需要三倍于其体积的氧气，产生二倍于其体积的CO₂气体，该有机物可能是（    ）

A.C₂H₄                       

B.C₂H₅OH

C.CH₃CHO           

D.CH₃COOH

某有机物的蒸气，完全燃烧时需用去三倍于其体积的氧气，该有机物不可能是

A．C₂H₄                                                                                                    B．C₂H₅OH

C．HOCH₂CH­₂COOH                               D．CH₃COOH

某有机物的蒸气，完全燃烧时需用去三倍于其体积的氧气，该有机物不可能是

1. A.
   C₂H₄
2. B.
   C₂H₅OH
3. C.
   HOCH₂CH­₂COOH
4. D.
   CH₃COOH

某有机物的蒸气，完全燃烧时需用去三倍于其体积的氧气，该有机物不可能是

A．C₂H₄                                                                                                    B．C₂H₅OH

C．HOCH₂CH­₂COOH                               D．CH₃COOH