N2O4 + H2O -> HNO3 + HNO2 — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

Step 1: Dinitrogen tetroxide (N2O4) is a mixed anhydride of nitrogen in the +4 oxidation state. Step 2: When dissolved in water at room temperature, it undergoes disproportionation into nitric acid (HNO3, +5 state) and nitrous acid (HNO2, +3 state). Step 3: Because the reaction produces two oxyacids—one with the '-ic' suffix (nitric acid) and one with the '-ous' suffix (nitrous acid)—it fits category C.