... A 2, 24 B 3,36 C 1, 12 D 1,68 Cõu13/ Nu cho mol mi cht: CaOCl2, KMnO4, K2Cr2O7, MnO2 ln lt phn ng vi lng d dung dch HCl c, cht to lng khớ Cl2 nhiu nht l A KMnO4 B K2Cr2O7 C CaOCl2 D MnO2 Cõu ... in hoỏ l: Fe+Ni 2+ >Ni+Fe2+ Sut in ng chun ca pin in hoỏ l:(cho E0Fe2+/Fe= - 0,44 v, E0Ni2+/Ni= -0 ,23 v) A 0 ,21 v B 0,12v C 2, 1v D 1,2v Cõu 58 in phõn 100 ml dung dch CuSO4 0 ,2 M vi I = 9,65Ampe ... thc: A (NH4)2CO3 B.NH4Cl C (NH2)2CO D NH4NO3 Cõu 35/ Dóy gm cỏc cht sau õy u tỏc dng vi dung dch NaOH? A C6H5NH2 ,C6H5OH B C6H5OH ,C2H5OH C CH3COOC2H5 , NH2CH2COOH D CH3COOH , C2H5OH Cõu 36/...