H2so4+BaCl- AgNO3+NaCl- Na2O+HNO3- NaOH+H2- решите пжл
H2SO4+BaCl2=BaSO4+2HCl AgNO3+NaCl=AgCl+NaNO3 Na2O+2HNO3=2NaNO3+H2O 2NaOH+H2=2Na+2H2O