2. A solution that may contain Cu, Bi?", Sn*, or Sb* is treated with thioacetamide in an acidic medium. The black precipitate which forms is partly soluble in strongly basic solution. The precipitate which remains is soluble in 6 M HNO, and gives only a white precipitate upon the addition of NH,OH. The basic solution, when acidified, produces an orange precipitate.. Which group II ions are present? Which are absent? Which are in doubt? How would you remove all doubt?

2. A solution that may contain Cu, Bi?", Sn, or Sb is treated with thioacetamide in an acidic medium. The black precipitate which forms is partly soluble in strongly basic solution. The precipitate which remains is soluble in 6 M HNO, and gives only a white precipitate upon the addition of NH,OH. The basic solution, when acidified, produces an orange precipitate.. Which group II ions are present? Which are absent? Which are in doubt? How would you remove all doubt?

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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Question

2. A solution that may contain Cu²*, Bi²*, Sn*, or Sb2* is treated with thioacetamide in an acidic
medium. The black precipitate which forms is partly soluble in strongly basic solution. The
precipitate which remains is soluble in 6 M HNO, and gives only a white precipitate upon the
addition of NH¸OH. The basic solution, when acidified, produces an orange precipitate.. Which
group II ions are present? Which are absent? Which are in doubt? How would you remove all
doubt?
4+

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