Copper pyrites, `CuFeS_(2)`, is the important source of copper 10 gm of it was leached with dil. `H_(2)SO_(4)` and solution diluted to 1L. 10 mL of this solution required 10 mL of 0.02 M `KMnO_(4)` is acidic medium. What is the % of Fe in copper pyrite.

Explanation

To solve the problem, we need to determine the percentage of iron (Fe) in copper pyrites (CuFeS₂) based on the provided data. Here’s a step-by-step solution:

### Step 1: Understand the Reaction
Copper pyrites (CuFeS₂) reacts with dilute sulfuric acid (H₂SO₄) to produce copper sulfate (CuSO₄), iron(II) sulfate (FeSO₄), and sulfur dioxide (SO₂). The reaction can be represented as:
\[ \text{CuFeS}_2 + 4 \text{H}_2\text{SO}_4 \rightarrow \text{CuSO}_4 + \text{FeSO}_4 + 2 \text{SO}_2 + 4 \text{H}_2\text{O} \]

### Step 2: Calculate the Moles of KMnO₄ Used
We know that 10 mL of the leachate solution required 10 mL of 0.02 M KMnO₄. First, we need to calculate the moles of KMnO₄ used:
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