СРОЧНО!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1) а) (CuOH)2CO3 = CuO + CO2 + H2O
CuO + C2H5OH = Cu + CH3CHO + H2O
б)2PbS+3O2=> 2PbO + 2SO2
PbO + H2 => Pb + H2O (t - 200—350°C )
в) 4FeS2 + 11O2 = 2Fe2O3 + 8SO2
Fe2O3 + 3H2 = 2Fe + 3H2O
г) NaCl = Na + Cl2 (электрический ток)