Consider three P, Q, R salts among them P and Q salts have different cations and also have different — Redox Reactions and Volumetric Analysis Chemistry Question
Question
Consider three P, Q, R salts among them P and Q salts have different cations and also have different coloured polyatomic anion due to charge transfer phenomenon while P and R salts have same cation but have different anions. Salt R decomposes into an acidic gas and a basic gas.
💡 Solution & Explanation
Step 1: Identify the initial state. Sodium tetrahydroxoaluminate, Na[Al(OH)4], is a soluble complex that forms a clear solution in water. Step 2: Analyze the reaction with CO2. Bubbling carbon dioxide gas reduces the pH of the basic solution, decomposing the complex and forming insoluble aluminium hydroxide, Al(OH)3↓. Step 3: Since a solid precipitate (Al(OH)3↓) is formed from soluble species, this reaction is a precipitate formation reaction (type A). Thus, the correct option is (a).