(b) When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidized or reduced? Why?
(c) In the reaction represented by the equation:
(i) name the substance oxidised.
(ii) name the oxidising agent.
(iii) name the substance reduced.
(iv) name the reducing agent.
In the above reaction, copper oxide is reduced to copper whereas hydrogen is oxidized to water.
(b)Magnesium is oxidized; because oxygen is added to magnesium creating MgO.
(c) (i) HCl is oxidized.
(ii)MnO2 is reduced.
(iii)MnO2 is oxidizing agent.
(iv) HCl is oxidizing agent.