Respuesta :
In the reactants Sb has oxidatin number 0 (because it is in its elemental form)
In the products Sb has oxidaton number +3.
Then Sb lost electrons which means it oxidized.
In the products Sb has oxidaton number +3.
Then Sb lost electrons which means it oxidized.
in the following reaction, Sb is oxidized.
2Sb (s) + 6H2SO4 (as) → Sb2(SO4)3 + 3SO2 + 6H2O