Question

Identify the oxidised species , reduces species , oxidising agent , reducing agent in the
following reactions:-
● PbO + C gives Pb + CO2
● Fe2O3 + Al gives Al2O3 + Fe

Answer 1

• This is an oxidation-reduction process, where both oxidation and reduction has taken place simultaneously.PbO is Lead (II) Oxide that is reduced to Lead (Pb) and Carbon or C is oxidized to CO2 or Carbon dioxide.Hence, the oxidized substance is Carbon dioxide or CO2 is the oxidized substance, while Lead (Pb) is the reduced substance in the chemical reaction.Here, Carbon acts as the reducing agent and Lead Oxide acts as the oxidizing agent.

• 2Al + Fe2O3 → Al2O3 + 2Fe          aluminium is getting oxidised to Al2O3, while Fe2O3 is getting reduced to iron metal. Thus(1) Fe2O3 is the oxidising agent.(2) Al is the reducing agent.(3) The substance getting oxidised is aluminium.