exp 4 report .docx - Chem 104 Conductimetric titration and...

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Chem 104Conductimetric titration and gravimetric determination of aprecipitateDate: 13.3.2018Introduction: The goal of this experiment is to determine the concentration of a known solution, by titrating it with another strong electrolyte that will react with the first substance. One can accomplish by reacting a Barium Hydroxide solution ofan unknown concentration with a titrant of Sulfuric Acid of known molarity. Then, by measuring the conductivity of the solution as one continues to add
titrant to, and beyond the equivalence point, we can locate the point at which theconductivity is lowest, due to the lack of ions, as those from both compounds will have reacted completely. Objectives: 1-Measure the conductivity of the reaction between sulfuric acid and barium hydroxide.2-Use the conductivity values to identify the equivalence point of the reaction.3-Measue the mass of a product of the reaction to identify the equivalence point of the reaction gravimetrically.4Calculate the molar concentration of the barium hydroxide solution.Materials and equipment:Vernier computer interfaceMagnetic stirrer and stirring barVernier conductivity probeTwo ring stands Barium hydroxide, Ba(OH)2solutionRing stand ring 0.100 M sulfuric acid, H2SO4, solutionUtility clamp Distilled water

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