A 2.950 sample containing NH,CI, Rb,CO3 and inert material was dissolved to give 250.0 ml of solution. A 50.00 ml aliquot was acidified and treated with excess sodium tetraphenyl borate Na*B(Ph)4 to precipitate Rb* and NH4*lons completely: (Ph)4B¯ + Rb* + (Ph)4BR6(s) (Ph)4 B ¯ + NH4* (Ph)4B NH4(s) The resulting precipitate weighed 1.234g. A fresh 100.00-ml aliquot of the original solution was made alkaline and heated to drive off all NH3. NH4 + OH" + NH3+H2O It was then acidified and treated with NaB(Ph)4 to give 1.1008g of precipitate. Calculate the percentage of NH,CI and Rb2CO3 In the original sample. (FW (Ph)4BRB = 404.79, (Ph)4 BNH4 = 337.24, Rb,CO3 = 184.52, NH,CI = 53.49) %3D

A 2.950 sample containing NH,CI, Rb,CO3 and inert material was dissolved to give 250.0 ml of solution. A 50.00 ml aliquot was acidified and treated with excess sodium tetraphenyl borate NaB(Ph)4 to precipitate Rb and NH4lons completely: (Ph)4B¯ + Rb + (Ph)4BR6(s) (Ph)4 B ¯ + NH4* (Ph)4B NH4(s) The resulting precipitate weighed 1.234g. A fresh 100.00-ml aliquot of the original solution was made alkaline and heated to drive off all NH3. NH4 + OH" + NH3+H2O It was then acidified and treated with NaB(Ph)4 to give 1.1008g of precipitate. Calculate the percentage of NH,CI and Rb2CO3 In the original sample. (FW (Ph)4BRB = 404.79, (Ph)4 BNH4 = 337.24, Rb,CO3 = 184.52, NH,CI = 53.49) %3D

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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