Double displacement reaction #scienceexperiment #odiastudy #odiamediumclass #10thclass #science

Double displacement reaction #scienceexperiment #odiastudy #odiamediumclass #10thclass #science Performing the double displacement reaction between sodium sulphate (\(Na_{2}SO_{4}\)) and barium chloride (\(BaCl_{2}\)) is a core practical in the Class 10 NCERT Science Lab Manual (Activity 1.10). This laboratory experiment visually demonstrates how ions exchange partners in an aqueous medium to form an insoluble solid. 1. AimTo study and perform the double displacement and precipitation reaction between aqueous solutions of sodium sulphate and barium chloride. 2. Materials RequiredSodium sulphate solution (\(Na_{2}SO_{4}\))Barium chloride solution (\(BaCl_{2}\))Two clean test tubesTest tube stand and dropper 3. ProcedureMeasure Cation A: Take about \(3\text{ mL}\) of clear, transparent sodium sulphate solution in the first clean test tube.Measure Cation B: Take about \(3\text{ mL}\) of clear, transparent barium chloride solution in the second test tube.Combine Reactants: Slowly add the contents of one test tube into the other, or mix them dropwise using a dropper.Observe Separation: Gently shake the mixture and let it sit undisturbed in the test tube stand for a few minutes. 4. ObservationsInitial State: Both starting solutions are completely clear, colourless, and transparent.Immediate Reaction: The moment the two solutions mix, a dense, milky white precipitate forms instantly in the test tube.Final State: After leaving the test tube undisturbed, the dense white solid settles to the bottom, leaving a clear, transparent liquid on top.