Gravimetric Analysis.Need aid.Thanks 2.5 Gravimetric analysisGravimetric analysis of a mixture gives the percentage of a pure substance (either element or compound)present in the mixture. Sulfates are widely distributed in nature in natural water (which has a density of1.029 g/mL) in concentrations ranging from a few to several thousand milligrams per litre. Sulfates areimportant in handling and treatment of wastewater.Below is the procedure for a precipitation gravimetric analysis.ExperimentObservation250 mL of the unknown natural water sample was measuredA colourless solution formed.into a 500 mL beaker and then 3 mL 1 M HCl was added.The solution was heated to near boiling point and an amountof 80 mL 0.5 M BaCl, was slowly added to it with continuousstirring.The solution became cloudy.The precipitate was allowed to sediment for about 30 minutes.Two drops of BaCl, were added and if cloudiness was againobserved, 40 mL BaCl, was added to the solution and allowedto sediment. This test was performed continuously until nocloudiness formed.There was cloudiness when two drops of BaCl, were added tothe solution.A filter paper (of constant weight) was cooled in a desiccator,weighed, and its mass noted.The recorded mass was 1.058g.The precipitate is BaSO,. The solution was filtered and cooledin a desiccator, weighed, and its mass noted.The filtrate and filter paper had a recorded mass of 3.5363g.Calculate the percentage composition of sulfate in the natural water by mass.

Given data,Density of water=1.029g/mLVolume of water sample=250mLMass of filter paper=1.058 gMass of…

Gravimetric analysis of a mixture gives the percentage of a pure substance (either element or compound) present in the mixture. Sulfates are widely distributed in nature in natural water (which has a density of 1.029 g/mL) in concentrations ranging from a few to several thousand milligrams per litre. Sulfates are important in handling and treatment of wastewater. Below is the procedure for a precipitation gravimetric analysis. Experiment 250 mL of the unknown natural water sample was measured into a 500 mL beaker and then 3 mL 1 M HCl was added. Observation A colourless solution formed. The solution became cloudy. The solution was heated to near boiling point and an amount of 80 mL 0.5 M BaCI, was slowly added to it with continuous stirring. The precipitate was allowed to sediment for about 30 minutes. There was cloudiness when two drops of BaCl, were added to Two drops of BaCl, were added and if cloudiness was again observed, 40 mL BaCI, was added to the solution and allowed to sediment. This test was performed continuously until no cloudiness formed. the solution. The recorded mass was 1.058 g. A filter paper (of constant weight) was cooled in a desiccator, weighed, and its mass noted. The precipitate is BasO,. The solution was filtered and cooled in a desiccator, weighed, and its mass noted. The filtrate and filter paper had a recorded mass of 3.5363g. Calculate the percentage composition of sulfate in the natural water by mass.

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter4: Types Of Chemical Reactions And Solution Stoichiometry

Section: Chapter Questions

Problem 106AE: Many over-the-counter antacid tablets are now formulated using calcium carbonate as die active...