Ngày tải lên :
23/06/2013, 13:44
... Cụng thc ca ba mui ú l: A HCOONa, CHC-COONa v CH3-CH2-COONa B CH2=CH-COONa, HCOONa v CHC-COONa C CH3-COONa, HCOONa v CH3-CH=CH-COONa D CH2=CH-COONa, CH3-CH2COONa v HCOONa Cõu 300 Este X khụng no, ... Trong s cỏc dung dch: Na2CO3, KCl, CH3COONa, NH4Cl, NaHSO4, C6H5ONa, nhng dung dch cú pH > l A KCl, C6H5ONa, CH3COONa B NH4Cl, CH3COONa, NaHSO4 C Na2CO3, NH4Cl, KCl D Na2CO3, C6H5ONa, CH3COONa ... xy hon ton thu c dd A Kt lun no sau õy l khụng ỳng v dd A? A.dd A cú th cha ion Fe3+, H+ v NO3- B.dd 2+ + 3A cú th cha ion Fe , H v NO C.dd A cú th cha ion Fe2+ v NO3- D.dd A cú th cha ion Fe2+,...