6. Under suitable conditions, thiourea, CS(NH2)2, is oxidized to sulfate by solutions of potassium bromate:3CS(NH2)2 + 4BrO3 + 3H20 → 3C0(NH2)2 + 3502 + 4Br + 6H+A 0.0725 g sample of a material was found to consume 14.20 mL of 0.008340 M KBrO3. What was the percent purityof the thiourea (76.12 g/mol) in the sample?[ 9.3337.523.126 ;12.43 ] %7. The tetraethyl lead, Pb(C2H5)4 in a 25.00 mL sample of gasoline was shaken with 15.00 mL of 0.02095 M I2. Thereaction is Pb(C2HS)4 + I2 Pb(C2HS)3I + C2HŞIAfter the reaction was complete, the unused I2 was titrated with 6.09 mL of 0.03465 M NazS2O3.I2 + 2NA2S203 → 2Nal + NazS4OsCalculate the weight in milligrams of Pb(C2HS)4 (323.4 g/mol) in each milliliter of the gasoline.[ 8.100; 5.4002.700 ;10.80]mg/mL

we establish the relation between the mole of reactant and mole of product

6. Under suitable conditions, thiourea, CS(NH2)2, is oxidized to sulfate by solutions of potassium bromate: 3CS(NH2)2 + 4BrO +3H2O → 3C0(NH2)2 + 35042 + 4Br + 6H+ A 0.0725 g sample of a material was found to consume 14.20 ml of 0.008340 M KBRO3. What was the percent purity of the thiourea (76.12 g/mol) in the sample? [ 9.33 ; 37.52 3.126 12.43 ] %

6. Under suitable conditions, thiourea, CS(NH2)2, is oxidized to sulfate by solutions of potassium bromate: 3CS(NH2)2 + 4BrO +3H2O → 3C0(NH2)2 + 35042 + 4Br + 6H+ A 0.0725 g sample of a material was found to consume 14.20 ml of 0.008340 M KBRO3. What was the percent purity of the thiourea (76.12 g/mol) in the sample? [ 9.33 ; 37.52 3.126 12.43 ] %

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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