1. 3M KOH is added to the precipitate and the tube is heated again. The solution is then centrifuged and the supernatant is separated from the precipitate. The precipitate is still brown-black, and the supernatant solution is yellow. The supernatant is acidified with HCI, thioacetamide is added and the solution is reheated. A yellow precipitate forms. A. Which cation(s) is definitely present in the unknown? Select all answer cholces that apply. A. Cu2 B. None of these ions C. Sn4+ D. BO+

1. 3M KOH is added to the precipitate and the tube is heated again. The solution is then centrifuged and the supernatant is separated from the precipitate. The precipitate is still brown-black, and the supernatant solution is yellow. The supernatant is acidified with HCI, thioacetamide is added and the solution is reheated. A yellow precipitate forms. A. Which cation(s) is definitely present in the unknown? Select all answer cholces that apply. A. Cu2 B. None of these ions C. Sn4+ D. BO+

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.26QAP

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