Question

Name the substance oxidized and reduced

Answer 1

Answer

1)  2Al(oxidised)     + 6HCl (reduced). ?  2AlCl3  + 3H2

2)  3MnO2 (reduced) + 4Al( oxidised) ? 3Mn  + 2Al2O3

3)  H2S   (oxidised)  + SO2(reduced)  ?  3S + 2H2O

4)  2Mg  (oxidised)  +O2(reduced)     ? 2MgO.

substances oxidised are reducing agents  ; while substances reduced are oxidising agents.