Ncert Exercises & Solutions

The most commonly used reducing agent among the following is :

1. AlCl₃

2. PbCl₂

3. SnCl₄

4. SnCl₂

Hint: Element stable in higher oxidation state than lower oxidation state show strong reducing agent

Reducing agents are those substances that reduce other substances and itself oxidises.

In SnCl₂, Sn oxidises in +2 oxidation state, thus, acts as a strong reducing agent i.e.,

{SnCl}_{2} + 2 {FeCl}_{3} \to 2 {FeCl}_{2} + {SnCl}_{4}

{SnCl}_{2} + 2 {CuCl}_{2} \to 2 CuCl + {SnCl}_{4}

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