Write down the possible equations for the reactions between the nitric acid solution and the substances

Write down the possible equations for the reactions between the nitric acid solution and the substances: iron hydroxide (3), sulfur oxide (6), sodium silicate, copper, copper oxide (2), potassium chloride, barium sulfate, iron.

1) Fe (OH) 3+ 3HNO3 = Fe (NO3) 3+ 3H2O
2) SO3 + HNO3 = the reaction does not go, since the acid oxide does not react with acids
3) Na2SiO3 + HNO3 = NaNO3 + H2SiO3 (acid precipitates)
4) Cu + 4HNO3 (conc.) = Cu (NO3) 2 + 2NO2 + 2H2O (the reaction proceeds if the acid is concentrated and at a high temperature, since copper passivates, that is, does not react with nitric acid when heated)
5) CuO + 2HNO3 = Cu (NO3) 2+ H2O
6) KCL + HNO3 = the reaction does not go, since no precipitate, no gas, or water is formed
7) BaSO4 + HNO3 = the reaction does not go, because barium nitrate and sulfuric acid will immediately begin to form in the solution, which will immediately turn it into a precipitate
8) Fe + 4HNO3 = Fe (NO3) 3+ NO + 2H2O (again, this reaction will proceed at temperature, since iron also passivates to nitric acid).