How many grams of are required to oxidize of in acidic medium? (MW of salt = 278) — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

$\text{moles } Fe^{2+} = \frac{5.56}{278} = 0.02 \text{ mol}$. <br>Ratio $KMnO_4 : Fe^{2+} = 1 : 5$. <br>$\text{moles } KMnO_4 = 0.004 \text{ mol}$. <br>$\text{Mass} = 0.004 \times 158 = 0.632 \text{ g}$.