**Passage 14:** Consider the titration of mole of with in acidic medium. <br> **Q1:** The total numb — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

**Step 1:** $Fe^{2+} \rightarrow Fe^{3+}$ ($1 e^-$). <br>**Step 2:** Two $C_2O_4^{2-}$ ions $\rightarrow 4CO_2$ ($2 \times 2 = 4 e^-$). <br>**Step 3:** $Ca^{2+}$ does not change. <br>**Step 4:** Total electrons lost = $1 + 4 = 5$.