Question:
Identify the redox reactions out of the following reactions and identify the oxidising and reducing agents in them.
(i) 3HCI(aq) + HNO3 (aq) → CI2(g) + NOCI (g) + 2H2O(l)
(ii) HgCI2 (aq) + 2KI (aq) → HgI2 (s) + 2KCI (aq)
(iii) Fe2O3 (s) + 3CO(g) → 2Fe (s) + 3CO2(g)
(iv) PCI3 (I) + 3H2O (I) → 3HCI (aq) + H3 Po3 (aq)
(v) 4NH3 + 3O2 (g) → 2N2 (g) + 6H2 O (g)
Solution:
(i) (iii) and (iv) are redox reactions
In (i) Reducing agent: HCl
Oxidizing agent: HNO3
In (iii) Oxidising agent: Fe2O3
Reducing agent: CO
In (iv) Oxidising agent: O2
Reducing agent: NH3
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