Barina sulfete is to be produced using precipitation method. (i) Identity reactants used. ii) Ontline the steps necessary to produce pure dry sangle of barium sultate.

To produce barium sulfate (BaSO₄) using the precipitation method, you will typically use the following reactants: ### (i) Identity of Reactants Used: 1. **Barium Chloride (BaCl₂)** - This is the source of barium ions (Ba²⁺). 2. **Sodium Sulfate (Na₂SO₄)** - This is the source of sulfate ions (SO₄²⁻). ### (ii) Outline the Steps Necessary to Produce a Pure Dry Sample of Barium Sulfate: 1. **Preparation of Solutions:** - Prepare an aqueous solution of barium chloride by dissolving an appropriate amount of BaCl₂ in distilled water. - Prepare an aqueous solution of sodium sulfate by dissolving an appropriate amount of Na₂SO₄ in distilled water. 2. **Mixing the Solutions:** - Slowly add the sodium sulfate solution to the barium chloride solution while stirring continuously. A white precipitate of barium sulfate will form immediately upon mixing due to the reaction: \[ \text{BaCl}_2 (aq) + \text{Na}_2\text{SO}_4 (aq) \rightarrow \text{BaSO}_4 (s) + 2\text{NaCl} (aq) \] 3. **Filtration:** - Once the precipitation is complete, allow the mixture to settle for a few minutes. Then, filter the mixture using a filter paper and funnel to separate the solid barium sulfate precipitate from the liquid (which contains sodium chloride and any unreacted reactants). 4. **Washing the Precipitate:** - Wash the collected barium sulfate precipitate on the filter paper with distilled water to remove any impurities and excess sodium chloride. This step is crucial to ensure the purity of the barium sulfate. 5. **Drying the Precipitate:** - Transfer the washed barium sulfate precipitate to a clean, dry container. You can dry it by placing it in an oven at a low temperature (around 100°C) or by air drying it at room temperature. Ensure that the sample is completely dry before proceeding. 6. **Grinding (if necessary):** - If a fine powder is required, grind the dried barium sulfate using a mortar and pestle to achieve the desired particle size. 7. **Storage:** - Store the pure dry barium sulfate in a labeled container, away from moisture and contaminants. By following these steps, you will obtain a pure dry sample of barium sulfate produced via the precipitation method.