A “Bayer” brand of aspirin was dissolved in some sodium hydroxide and transferred to a 100.0...
A “Bayer” brand of aspirin was dissolved in some sodium hydroxide and transferred to a 100.0 ml volumetric flask and diluted to the mark with distilled water. A 2.6ml aliquot of this solution was transferred to a second 100.0 ml volumetric flask and diluted to the mark with iron (III) chloride solution. The concentration of the iron (III) salicylate complex was found to be 0.055mM. What was the original concentration of A.S.A (aspirin) in the original solution, in mM? Round your answer to 3 decimal places.
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A “Bayer” brand of aspirin was dissolved in some sodium
hydroxide and transferred to a 100.0...
0.869mL of 0.04020 M sodium salicylate was diluted with iron (lll) chloride solution in a 100.0...
0.869mL of 0.04020 M sodium salicylate was diluted with iron (lll) chloride solution in a 100.0 mL volumetric flask. What is the concentration of the iron (lll) salicylate in the flask, in mM? Round your answer to two decimal places.
A 0.1019 - g portion of an aspirin tablet was dissolved in sufficient water to prepare...
A 0.1019 - g portion of an aspirin tablet was dissolved in sufficient water to prepare 1.000 liter of solution. A pipet was used to transfer 10 mL of the solution to a 100 - mL volumetric flask. A 2 - mL portion of 4 M sodium hydroxide solution was added to the flask, and the resulting solution was diluted to the mark with water. The fluorescence of the diluted sample solution was found, by the working curve method, to...
b) In this experiment an aspirin ta and dissolved in 10 mL of 1.0M Na mark...
b) In this experiment an aspirin ta and dissolved in 10 mL of 1.0M Na mark with deionized water. Using a into a 100-mL volumetric flask and make a diluted aspirin solution'. ent an aspirin tablet was placed in a 250-ml volumetric flask 10 mL of 1.OM NaOH solution, the flask was then filled to the zed water. Using a pipette, 5.0 mL of this solution was added IL Volumetric flask and diluted to the mark with FeCl solution to...
3) In another experiment, a European brand low dose aspirin tablet was placed in a 500-ml...
3) In another experiment, a European brand low dose aspirin tablet was placed in a 500-ml volumetric flask and dissolved in 20 mL of 1.0M NaOH solution, the flask was then filled to the mark ( 500 mL) with deionized water. Using a pipette 50.0 mL of this solution was added into a 100-mL volumetric flask and diluted to the mark with FeCl3 solution. The absorbance recorded for the European aspirin tablet was 0.185. The following data was used for...
b) In this experiment an aspirin tablet mark with deionized water. Using a pipette into a...
b) In this experiment an aspirin tablet mark with deionized water. Using a pipette into a 100-mL volumetric flask and diluted to t make a 'diluted aspirin solution'. an aspirin tablet was placed in a 250-ml volumetric flask o dissolved in 10 mL of 1.0M NaOH solution, the flask was then 1.0M NaOH solution, the flask was then filled to the nized water. Using a pipette, 5.0 mL of this solution was added mL volumetric flask and diluted to the...
A standard solution of iron was made by weighing 0.075 g of Fe(NH4)2(SO4)2 6(H2O) in 250...
A standard solution of iron was made by weighing 0.075 g of Fe(NH4)2(SO4)2 6(H2O) in 250 mL. Aliquots of this standard solution (see below) were transferred to a 100 mL volumetric flask, pH adjusted with citrate, and reacted with hydroquinone and o-phenanthroline and diluted to volume (100 mL). The absorbance was measured in a 1.0-cm cell using a Genesys 20 Spectrophotometer at 508 nm: Aliquot of standard solution Absorbance 1.0 mL 0.079 2.0 mL 0.163 5.0 mL 0.413 10.0 mL...
II. Digestion of Acetylsalicylic acid(standard and tablet) with NaOH . Digestion of Acetylsalicylic Acid Standard to Pr...
II. Digestion of Acetylsalicylic acid(standard and tablet) with NaOH . Digestion of Acetylsalicylic Acid Standard to Prepare Stock Solution: Obtain ca. 0.1 g dried acetylsalicylic acid (MM = 180.16 g/mol), accurately weighed, and quantitatively transfer to a 125-ml Erlenmeyer flask. Add 5 ml 1.0 M NaOH and heat mixture to boiling on a hot plate. This will hydrolyze the acetylsalicylic acid to sodium salicylate. If necessary, rinse down the walls of the Erlenmeyer with DI water to ensure complete hydrolysis...
0.6573 g of potassium iodate is dissolved and diluted to a volume of 100.0 mL. Then...
0.6573 g of potassium iodate is dissolved and diluted to a volume of 100.0 mL. Then 25.00 mL of this stock solution is pipetted into a 100.0 mL volumetric flask which is filled to the mark with water. What is the concentration of the final standard solution in mol/L? Include units in your answer, and round the final answer to the correct number of significant figures.
A penny having a mass of 2.5340 g was dissolved in 20 mL of 8 M HNO3. The resulting solution was transferred to a 100.00-ml volumetric flask and diluted to the mark with water.
A penny having a mass of 2.5340 g was dissolved in 20 mL of 8 M HNO3. The resulting solution was transferred to a 100.00-ml volumetric flask and diluted to the mark with water. Then, a sample solution was prepared by transferring 10.00 mL of this solution to a 25.00- ml volumetric flask, adding 2.00 mL of 15 M NH3 and diluting to the mark with waterThe concentration of [Cu(NH3)4]2+ in the sample solution (determined using a Spectro Vis spectrophotometer)...
An unknown amount of a compound with a molecular mass of 294.46 g/mol is dissolved in...
An unknown amount of a compound with a molecular mass of 294.46 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 343 nm is 0.456 in a 1.000 cm cuvette. The molar absorptivity for this compound at 343 nm is €343 = 5721 M-?cm-1. What is the concentration...
A 0.1019 - g portion of an aspirin tablet was dissolved in sufficient water to prepare 1.000 liter of solution. A pipet was used to transfer 10 mL of the solution to a 100 - mL volumetric flask. A 2 - mL portion of 4 M sodium hydroxide solution was added to the flask, and the resulting solution was diluted to the mark with water. The fluorescence of the diluted sample solution was found, by the working curve method, to...
b) In this experiment an aspirin ta and dissolved in 10 mL of 1.0M Na mark with deionized water. Using a into a 100-mL volumetric flask and make a diluted aspirin solution'. ent an aspirin tablet was placed in a 250-ml volumetric flask 10 mL of 1.OM NaOH solution, the flask was then filled to the zed water. Using a pipette, 5.0 mL of this solution was added IL Volumetric flask and diluted to the mark with FeCl solution to...
3) In another experiment, a European brand low dose aspirin tablet was placed in a 500-ml volumetric flask and dissolved in 20 mL of 1.0M NaOH solution, the flask was then filled to the mark ( 500 mL) with deionized water. Using a pipette 50.0 mL of this solution was added into a 100-mL volumetric flask and diluted to the mark with FeCl3 solution. The absorbance recorded for the European aspirin tablet was 0.185. The following data was used for...
b) In this experiment an aspirin tablet mark with deionized water. Using a pipette into a 100-mL volumetric flask and diluted to t make a 'diluted aspirin solution'. an aspirin tablet was placed in a 250-ml volumetric flask o dissolved in 10 mL of 1.0M NaOH solution, the flask was then 1.0M NaOH solution, the flask was then filled to the nized water. Using a pipette, 5.0 mL of this solution was added mL volumetric flask and diluted to the...
An unknown amount of a compound with a molecular mass of 294.46 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 343 nm is 0.456 in a 1.000 cm cuvette. The molar absorptivity for this compound at 343 nm is €343 = 5721 M-?cm-1. What is the concentration...
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