下列化合物按堿性由強到弱排列成序為()
A.abcd B.dcba C.dabc D.cdba
A. ClCH2CHO,CH3CH2CHO,PhCHO,PhCOCH3 B. ClCH2CHO,PhCHO,CH3CH2CHO,PhCOCH3 C. PhCHO,ClCH2CHO,CH3CH2CHO,PhCOCH2 D. CH3CH2CHO,PhCHO,ClCH2CHO,PhCOCH3
A.CH3COCH2CH3,CH3CHO,CF3CHO,CH3COCH=CH2 B. CH3CHO,CF3CHO,CH3COCH2CH3,CH3COCH=CH2 C. CF3CHO,CH3CHO,CH3COCH=CH2,CH3COCH2CH3 D. CF3CHO,CH3COCH=CH2,CH3CHO,CH3COCH2CH3