Осуществить цепочку превращений: 1) h2 -> h2s -> so2 -> so3 -> h2so4 2) cuo -> h2o -> h2 -> hcl -> agcl 3) n2 -> nh3 -> n2 -> no -> no2

H2+S=H2S
2H2S+3O2=2SO2+2H2O
2SO2+O2=2SO3
SO3+H2O=H2SO4

CuO+H2=Cu+H2O
2H2O=2H2+O2
H2+Cl2=2HCl
HCL+AgNO3=AgCl+HNO3

N2+3H2=2NH3
4NH3+3O2=2N2+6H2O
N2+O2=2NO
2NO+O2=2NO2