Which of the following statements correctly describe the redox nature of the non-stoichiometric oxid — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

Non-stoichiometric oxides like $Fe_{0.93}O$ occur due to metal deficiency defects where $Fe^{2+}$ ions are missing, and electrical neutrality is maintained by converting some $Fe^{2+}$ to $Fe^{3+}$. Let $Fe^{3+} = y$ and $Fe^{2+} = 0.93 - y$. $3y + 2(0.93 - y) = 2 \Rightarrow y = 0.14$. $\%$ of $Fe^{3+} = (0.14/0.93) \times 100 \approx 15.05\%$.