b) Will the sample be contaminated with any of the impurities?Calculate the percent purity of the initial sample (in terms of compound A) - ( i.e.express the amount of compound A in the initial sample as a percentage of themass of initial sample).Calculate the percent purity of the final sample (in terms of compound A) - (i.e.express the amount of compound A in the final sample as a percentage of themass of final sample).Did the recrystallization procedure result in an increase of the percent purity ofcompound A in the sample? Comment on the results. 1. An impure sample of compound A is contaminated with two impurities B and C. The sample is tobe purified by recrystallization using ethanol as the solvent. The solubility properties of the threecomponents are summarized below.Solubility inSolubility in ethanol Solubility in 50 mLSolubility in 50 mLethanol at -78 °Cat - 0°Cethanol at -78 °Cethanol at - 0°C(g)(g)Compound A0.12 g/mL0.02 g/mLImpurity B0.58 g/mL0.04 g/mLImpurity C0.005 g/mL0.0003 g/mLThe impure (7.5 g) sample contains 5.0 g of compound A, 1.5 g of B and 1.0 g of C and isrecrystallized using 50 mL of ethanol. The sample is boiled with 50 mL of ethanol, filtered bygravity and then cooled in ice and filtered by suction.

Solubility is defined as the mass of solute present per mL of solvent at a specific temperature. Its…

Will the sample be contaminated with any of the impurities? Calculate the percent purity of the initial sample (in terms of compound A) ( i.e. express the amount of compound A in the initial sample as a percentage of the mass of initial sample). Calculate the percent purity of the final sample (in terms of compound A) - (i.e. express the amount of compound A in the final sample as a percentage of the mass of final sample). Did the recrystallization procedure result in an increase of the percent purity of compound A in the sample? Comment on the results.

Will the sample be contaminated with any of the impurities? Calculate the percent purity of the initial sample (in terms of compound A) ( i.e. express the amount of compound A in the initial sample as a percentage of the mass of initial sample). Calculate the percent purity of the final sample (in terms of compound A) - (i.e. express the amount of compound A in the final sample as a percentage of the mass of final sample). Did the recrystallization procedure result in an increase of the percent purity of compound A in the sample? Comment on the results.

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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