酸碱平衡 A叫H+B-≈A+B-H c-h+ B c +B-H H3C"CH3 CH3 CH20 RC=CH2+CH3CH20H p K<1 pKa 15.9 H3C CH2 CH3CH20 RC-CH CH3CH2OH pKa 11 cooC2Hs K>1 COOC2H5 pKa 15.912 酸碱平衡 H3C CH3 O + CH3CH2O RC CH2 O + CH3CH2OH pKa 20 pKa 15.9 A H + B A + B H C H + B C + B H H3C CH2 O + CH3CH2O RC CH O + CH3CH2OH pKa 11 pKa 15.9 COOC2H5 K > 1 COOC2H5 K < 1