Gravimetric Determination of Sulfate

Gravimetric Determination of Sulfate Purpose The tendency of this lab is to determine the destiny of convert in the provide by precipitating the sulfate as barium sulfate. Materials filler opus atomic number 11 sulfate graduate cylinder etna burner curb glass Beakers (250 mL, 400 mL) Rubber bulb Graduated pipette Beaker tongs Funnel Filter Paper Sodium Sulfate Drying oven laundry bottle Stirring rod Silver nitrate Hydrochloric acid Distilled wet supply Sm both test tube Procedures First, .4861 grams of atomic number 11 sulfate was fixed into a clean 400mL beaker. Exactly 200mL of water system and 1mL of HCl was added to the same beaker. A belowstand glass was set(p) on the beaker and the firmness was heated utilize the Bunsen burner to a infirm boil. The watch glass was educate with the beaker tongs. Using a safe bulb and a breathing in rod to stir the standstill continuously, 15.00mL of .25M BaCl2 dissolving agent was added to the final result in the beaker. The watch glass is replaced and the solution is keep hot just not boiling for 15 minutes. The precipitate was allowed to settle. When the liquid above the precipitate was clear, the solution was tested and true for completeness of precipitation when a some drops of BaCl2 solution were added from a pipette.

Next, gain vigor paper was place into the funnel and streamed with distilled water. A clean 400mL beaker is placed under the funnel and the precipitate was filtered through. When all the precipitate was filtered and removed from the beaker the quietus is tone downed with distilled water. Ab egress 3mL of the wash water is salt extraneous in a subtile test tube. A a few(prenominal) drops of 0.1M silver nitrate solution is added to the water to test for the presences of Cl- ions. lastly the filter paper was placed in the dry out oven to dry completely and thus weighted. Calculations and observations were do and recorded. Observations The precipitate produced from the mixing of solutions was small-grained white and made the water cloudy. When the...If you want to sire a full essay, inn it on our website: Ordercustompaper.com

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