Question

1. Write the oxidation state of each element and identify the oxidising agent and reducing agent in the following reaction: 

H₂S(g) + Cl₂ (g) → 2HCl(g) + S(s) 

2. Fill in the blanks and classify the following reactions into oxidation and reduction: 

(i) Mn⁷⁺ + 5e^- → ………

(ii) Sn⁴⁺ + ……… → Sn²⁺ 

(iii) Na → Na⁺ + ………

(iv) Fe³⁺ +……… → Fe²⁺ 

Answer 1

1. 

Reducing agent – H₂S  

Oxidising agent - Cl₂ 

2.(i) Mn⁷⁺ + 5e^- → Mn²⁺

(ii) Sn⁴⁺ + 2e^- → Sn²⁺ 

(iii) Na → Na⁺ + e^- 

(iv) Fe³⁺ + e^- → Fe²⁺ 

Oxidation: Reaction (iii) 

Reduction: Reactions (i), (ii) and (iv)