4. In the following redox reactions ,identify the oxidising agent , reducing agent.
(i) 2 Mg ₊ O2 → 2MgO
(ii) CuO ₊ H2→ Cu ₊ H2O
(iii) Fe2O3 ₊ 3CO → 2Fe ₊ 3CO2
(iv) Zn ₊ 2HCl → ZnCl2 ₊ H2
(i) 2 Mg ₊ O2 → 2MgO
(ii) CuO ₊ H2→ Cu ₊ H2O
(iii) Fe2O3 ₊ 3CO → 2Fe ₊ 3CO2
(iv) Zn ₊ 2HCl → ZnCl2 ₊ H2
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i) Magnesium is the reducing agent and oxygen is the oxidising agent
ii) copper is the oxidising agent and hydrogen is the reducing agent
iii)iron is the oxidising agent and carbon is the reducing agent
iv)No oxidising and reducing agents