Gravimetric Determination of Sulfate

Gravimetric Determination of Sulfate Purpose The purpose of this research laboratory is to determine the parcel of convert in the hydrate by precipitating the sulfate as barium sulfate. Materials Filler motif atomic number 11 sulfate Graduated cylinder etna burner Watch glass Beakers (250 mL, 400 mL) Rubber myeline Graduated pipette Beaker tongs Funnel Filter opus Sodium Sulfate Drying oven Wash bottle Stirring rod cell Silver nitrate Hydrochloric acid Distilled water supply pocketable test tube Procedures First, .4861 grams of sodium sulfate was fixed into a clean 400mL beaker. Exactly 200mL of water and 1mL of HCl was added to the same beaker. A enamour glass was placed on the beaker and the firmness was heated use the Bunsen burner to a light boil. The watch glass was reach with the beaker tongs. Using a safety bulb and a stirring rod to stir the base continuously, 15.00mL of .25M BaCl2 solution was added to the solution in the beaker. The watch glass is replaced and the solution is keep hot entirely not boiling for 15 minutes. The precipitate was allowed to settle. When the liquid above the precipitate was clear, the solution was tried and true for completeness of precipitation when a some drops of BaCl2 solution were added from a pipette.

Next, gain vigor base was place into the funnel and streamed with distilled water. A clean 400mL beaker is placed nether the funnel and the precipitate was filtered through. When all the precipitate was filtered and removed from the beaker the remnant is washed with distilled wa ter. Ab expose 3mL of the wash water is sa! lt out in a small test tube. A few drops of 0.1M silver nitrate solution is added to the water to test for the presences of Cl- ions. in conclusion the filter paper was placed in the dry out oven to dry completely and then weighted. Calculations and observations were made and recorded. Observations The precipitate produced from the compartmentalisation of solutions was small-grained white and made the water cloudy. When the...If you want to convey a full essay, order it on our website: BestEssayCheap.com

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