A.NO | B.N2O | C.N2 | D.N2O3 |
A.氮和氧 | B.碳 | C.氮和硫 | D.氮和碳 |
A.+1 | B.+2 | C.+4 | D.+5 |
A.2.5 mol | B.4 mol | C.0.25 mol | D.0.5 mol |
A.2 Fe3++SO2+2H2O="===2" Fe2+++4 H+ |
B.2 Fe2++Cl2="===2" Fe3++2 Cl- |
C.H2O2+H2SO4====SO2↑+O2↑+2H2O |
D.I2+SO2+2H2O====H2SO4+2HI |
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