Ngày tải lên :
28/02/2015, 07:32
... p-CH3-C6H4Br,p-CH2Br-C6H4Br,p-CH2OH-C6H4Br,p-CH2OH-C6H4OH B CH2Br-C6H5, p-CH2Br-C6H4Br,p-CH2OH-C6H4Br, p-CH2OH-C6H4OH 35 C CH2Br-C6H5, p-CH2Br-C6H4Br,p-CH3-C6H4OH, p-CH2OH-C6H4OH D p-CH3-C6H4Br,p-CH2Br-C6H4Br,p-CH2Br-C6H4OH,p-CH2OH-C6H4OH ... 50%.D HCOOH 34, 33%; C3H7COOH 65,67% Bi 30 Cho 18 ,4 gam hn hp gm phenol v axit axetic tỏc dng vi dung dch NaOH 2,5M cn va 100 ml Phn trm s mol ca phenol hn hp l A 80% B 14, 49% C 18 ,49 % D 40 % Bi trc ... v CO2 to l A 2,94g B 2 ,48 g C 1,76g D 2,76g Cõu Tỏch nc ca 4, 6g ancol etylic bng dung dch H 2SO4 c vi hiu sut phn ng t 70% Th tớch (lớt) etilen sinh (ktc) l A 1,236 B 1,568 C 2, 24 D 2,732 Cõu 5.Cho...