4. When copper chips are exposed to concentrated nitric acid, which gas is produced? a) Nitrogen (III) oxide b) Nitrogen (IV) oxide c) Nitrogen (I) oxide d) Nitrogen (II) oxide
When copper is treated with a certain concentration of nitric acid, nitric oxide and nitrogen dioxide are liberated in equal volumes according to the equation: xCu+yHNO3⟶Cu(NO3)2+NO+NO2+H2O.
