Burner • Water • Funnel • Retort stand • Funnel Paper • Sieve • Iron Filings • CaCO3 • NaCl • tripod • Gauze Mat • Cling Wrap • Saftey Goggles Method: 1. Gather Apparatus and the mixture of Iron‚ CaCO3 and NaCl. 2. Weigh beaker and mixture. 3. Use magnetic separation to remove Iron filings. 4. Set up retort stand and add filter paper to the filter funnel. 5. Put the rest of the mixture into the filter funnel and add water slowly to filter out the water and dissolved NaCl. 6. Evaporate
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(25 mL)Filter paper (Whatman No. 1—three 12.5 cm sheets)Sodium chloride/charcoal mixture (4 g)Sodium chloride/copper(II) chloride mixture (8 g)Ethanol (25 mL)Distilled waterBoiling chipProcedureA Separation of a Sodium Chloride and Charcoal Mixture#1 Place 4 g of the salt/charcoal mixture in a 100 mL beaker and add about 15 mL of distilled water. Stir the mixture for about two minutes to allow the salt to dissolve. #2 Set up a filter funnel with filter paper on a filter funnel stand. Filter the mixture
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qualitatively determine the makeup of the solid SO3-. Two separate experiments with the initial compounds of BaCl2 and SO42- were put into solution to allow for the BaSO4 precipitate to form. Through filtration and ignition of precipitate containing ashless papers‚ the solid masses of BaSO4 were attained. With a gravimetric factor of 1:1‚ sample 1 resulted in the formation of 0.5874g BaSO4 from 0.4004g of SO42-‚ while sample 2 resulted in the formation of 0.4073g BaSO4 from 0.3985g of SO42-. The two samples
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| Mass of M2CO3 | 2.031 g | Mass of Filter Paper | 0.969 g | Mass of CaCO3 | 1.5782 g | Moles of CaCO3 | 0.01577 moles | Molar Mass of M2CO3 | 128.79 g/mol | Identity of M2CO3 | K2CO3 (potassium carbonate) | Percent error | 6.8% | Calculations and Graphs: Mass of M2CO3 Mass of Crucible and M2CO3 minus Mass of Crucible = mass of M2CO3 27.752 g – 25.721 g = 2.031 g Mass of CaCO3 Mass of Filter Paper and CaCO3 minus Mass of Filter Paper = Mass of CaCO3 2.551 g – 0.969 g = 1
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do this‚ a ring stand must be set up with an iron ring and a glass funnel. Take a piece of filter paper and fold it as demonstrated by Mrs. Montoney‚ and place it in the funnel. 8. Place a 250mL beaker under the funnel for the filtered water. 9. Put the remaining mixture in the funnel. 10. Pour some water in a beaker‚ record the amount of water and pour it in the funnel. The mixture will begin to filter and drain the salt‚ leaving behind the sand. More water may need to be added depending on
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Quantitative Separation of a Mixture Lab Pre-Lab Questions: 1. Define the following: Physical Change Heterogeneous Mixture Sublimation Filtrate Residue 2. List two physical separation methods. 3. List the formula for determining percent composition by mass. Objectives: 1. to separate a three component mixture and 2. determine the percent composition by mass of each component in the mixture. Materials: Ammonium chloride (NH4Cl)‚ Sodium chloride (NaCl also known as
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THE GRAVIMETRIC DETERMINATION OF SULFATE Learning Goals. 1. To determine the amount of Sulfate in an Unknown sulphate sample. 2. To perform and develop skills in precipitation Gravimetric method of quantitative analysis. DISCUSSION: Gravimetric analysis is one of the oldest analytical techniques and for this reason is referred to as a "classical method." Gravimetric procedures are usually very accurate‚ but more tedious than other methods. The only major equipment needed
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laboratories for a pharmaceutical company developing and maintaining standards to ensure consistency in the production of medicine. Procedure: First a weigh boat was weighed as precisely as possible‚ and then the weigh boat was weighed with a filter paper placed inside it. Next‚ about 0.2 grams of the unknown nickel compound C was weighed in a clean beaker. The mass of the unknown was determined as precisely as possible. The sample was put in about 20 mL of deionized water and stirred together until
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well to see how they work in different concentrations of hydrogen peroxide (H2O2). Prediction would be‚ that the filter paper discs that were used‚ will rise up to the surface in a time in the tube of different concentration of hydrogen peroxide. And in different concentrations the time will be different. As higher the concentration would be‚ the less time it would take for the filter paper discs to rise to the surface. 2. Experimental design. Independent variable – is the concentration of hydrogen
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Gravimetric Analysis of SULFATE as Barium Sulfate. Objectives * To learn the techniques associated with gravimetric analysis. * To use stoichiometry to calculate the percentage by mass of sulfate in an unknown sulfate salt. Background Gravimetric analysis is a quantitative method for accurately determining the amount of a substance by selective precipitation of the substance from an aqueous solution. The precipitate is separated from the remaining aqueous solution by filtration and
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