16. A solution may contain Ag*, Pb2+, and Hg22+, A white precipitate is formed after the addition on 6.0 M HCI. The precipitate is insoluble in hot water. The residue turns black with the addition of ammonia. a. Which ions are present b. Which are absent

16. A solution may contain Ag*, Pb2+, and Hg22+, A white precipitate is formed after the addition on 6.0 M HCI. The precipitate is insoluble in hot water. The residue turns black with the addition of ammonia. a. Which ions are present b. Which are absent

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter36: Qualitative Analysis Of Group I Cations

Section: Chapter Questions

Problem 3ASA

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Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for

Question

16. A solution may contain Ag*, Pb2+, and Hg22+ , A white precipitate is formed after the
addition on 6.0 M HCI. The precipitate is insoluble in hot water. The residue turns
black with the addition of ammonia.
a.
Which ions are present
b. Which are absent
17. What is the difference between discard and decant

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