ethyl mercaptan concentration in a mixture was determined by shaking a 2.0430-g sample with 50.00 mL of 0.01204 M I2 in a tightly stoppered flask:  2C2H5SH + I2 ---> C2H5SSC2H5 + 2I- + 2H+  The excess I2 was back-titrated with 18.23 mL of 0.01437 M Na2S2O3. Calculate the percentage of C2H5SH (MW = 62.13 g/mol). Millimoles of excess standard I2 solution is ___ 0.5239

8) 25.00 mL of a halide solution, which contains approximately 0.025 M iodide and approximately 0.05 M chloride, is titrated with 0.0500 M AgNO3. Ksp (Agl) = 8.3 x 10-17 and Ksp (AgCl) = 1.8 x 10-10./25.00 mL van 'n haliedoplossing, wat ongeveer 0.025 M jodied en ongeveer 0.05 M chloried bevat, word getitreer met 0.0500 M AgNO3. Ksp (Agl) = 8.3 x 10-17 en Ksp (AgCl) = 1.8 × 10-10. a) Sketch a rough pAg* vs volume AgNO3 added curve of the titration of 25 mL of the halide solution with the AgNO3 solution. Your sketch should be consistent with the information provided, including that the pAg* scale should be an approximate representation of the true value at different points of the titration. Your curve should also include realistic estimates of the equivalence points. / Skets 'n rowwe benoemde pAg* vs volume AgNO3 bygevoeg kurwe van die titrasie van 25 mL van die halied oplossing met die AgNO3 oplossing. Jou skets moet ooreenstem met die inligting wat verskaf word, insluitend dat die…

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Standard oxylate solution used to standardize KMnO4 was prepared by dissolving 3.299g of Na2C2O4 in 1.000L of water containing H2SO4. add 25mL aliquot of the Na2C2O4 solution required 28.39 mL of KMnO4 for titration. A blank titration of 25mL of water containing H2SO4 required 0.03 mL of KMnO4. what is the molarity of the KMnO4 solution?   5C2O42-+2MnO4-+16H+ → 10CO2+2Mn2++8H2O