Question

The pair of ions, in which first one acts as a reducing agent and second one acts as an oxidizing agent is:

• A. Pb$^{4+}$, Sn$^{2+}$
• B. Sn$^{4+}$, Pb$^{4+}$
• C. Sn$^{2+}$, Pb$^{4+}$
• D. Sn$^{2+}$, Pb$^{2+}$

Hint:

Always identify which ion loses electrons (reducing agent) and which gains electrons (oxidizing agent).

Answer 1

The Correct Option is C

Step 1: Redox terminology.
A reducing agent loses electrons (undergoes oxidation), while an oxidizing agent gains electrons (undergoes reduction).

Step 2: Evaluating the ions.
Sn²⁺ can be oxidized to Sn⁴⁺, functioning as a reducing agent. Pb⁴⁺ can be reduced to Pb²⁺, functioning as an oxidizing agent.

Step 3: Conclusion.
The correct pairing is Sn²⁺ as the reducing agent and Pb⁴⁺ as the oxidizing agent.