1.4Al+NaNO3+3NaOH+2H2O--->4NaAlO2+NH3+2H2.PHan nay kho anh cunh ko chac nen aj co y kien thi cu dua len moj ng cung tham khao
2.K3[Fe(CN)6]+Cr2O3+10KOH--->6K4[Fe(CN)6]+2K2CrO4+5H2O
3.Pb3O4+2KI+4H2SO4--->K2SO4+3PbSO4+I2+4H2O
4.4K2Cr2O7+3(NH4)2S+H2O--->2KOH+Cr(OH)3+6NH3+3S
Ai THAY HAY CAM ON HAU TA ANH NHE CO CAU HOI GI CU DUA LEN DE MOI NGUOI CUNG GIAI DAP NHE