知识问答
最佳答案:2NO2 -- (catalyst) --> N2 + 2O2Used in car exhaust pipe to remove harmful gases.
最佳答案:s+o2->so2+o->so3s+H2->H2SN+O2->NO2+O2+H2O->HNO5
最佳答案:H2S+Br2=S+2HBr;2H2SO4+Cu=CuSO4+SO2+2H2O;Na2S+2HCl=2NaCl+H2S;Fe+S=FeSS+O2=SO2;2SO