This is a practice problem Experiment 4. Assay of Antimony Potassium TartratePrinciple:lodimetryThe percentage purity of antimony potassium tartrate set by the USP is 99 to 103%Procedure (reduce formulation to %)1. Dissolve 500 mg of Antimony Potassium Tartrate (CaH.K,Sb;O12" 3H;0) in 30 ml of water2. Add 25 ml of cold saturated of sodium bicarbonate solution and a few drops of starch TS3. Immediately titrate with 0.1 N iodine to the production of a persistent blue color, wheretheoretical volume consumed for each trial is provided in the table below).7. Calculate the percentage purity of the sample, using the formula:ml were consumed (theNx ml x meg% =x 100 %WeReaction (fill in the coefficients on the blank spaces):1 mole of CaHaK2Sb2O12 3H2O is equal to 2 moles of KOOCCHOHCHOHCOO(SbO)коосснонснонсоO(SbO) + l2 + HаО — коосснонснонсоO(SbOг) + 2HIOxidation: Reducing agentSb*10-2 + H2O → Sb*3O22 + 2H +_ e-Reduction: Oxidizing agent120 +_ e- - 21-1* Number of e- gain/loss for 1 mole of antimony is :since 2 moles will be consumed, ••x_ moles), the factor of antimony potassium tartrate will beData and Results:Trial 1Trial 2Trial 3Weight of potassium antimony tartrateVolume of iodine solution15.0 ml15.2 ml15.5 mlPercentage purityAverage percentage purityCalculation and ConclusionOn space below, solve the titer value and average percentage purity of the sample then interpret.

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Oxidation: Reducing agent Sb*10-2 + H2O –→ Sb*³Oz^² + 2H + _ Reduction: Oxidizing agent 1;0 + _ • → 21-1 * Number of e- gain/loss for 1 mole of antimony is

Oxidation: Reducing agent Sb10-2 + H2O –→ Sb³Oz^² + 2H + _ Reduction: Oxidizing agent 1;0 + _ • → 21-1 * Number of e- gain/loss for 1 mole of antimony is

Chemistry

10th Edition

ISBN:9781305957404

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

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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