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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Transcribed Image Text:During a lab on qualitative analysis, an unknown solution containing one cation was analyzed and the
following data was collected:
Anions Added to the
Unknown Solution
S²-
SO4²-
OH
CO3²-
Which one of the following cations is found in the unknown solution?
CATIONS
Ba2+
Ca²+
Sr²+
High
Solubility
(aq)
Observation
Be2+
Mg2+
no precipitate
precipitate
precipitate
precipitate
Cl, Br, I-
Halides
Ag+, Pb²+,
Low
Solubility Tl+, Hg₂²+,
(s)
Hg, Cu
Most
S2-
Solubility Table
Group 1,
NHÀ,
Group 2
Most
ANIONS
OH
Group 1,
NH4*, Sr²+,
Ba²+, Tl
Most
SO4²-
Most
Ag+, Pb²+,
Ca²+, Ba²+,
Sr²+, Ra²+
All Group 1 compounds, including acids, and all ammonium compounds are assumed to have high solubility in
water.
CO3²-, C₂H3O2 NO3
PO4³-,
SO3²-
Group 1, Most All
NH4*
Most
Ag+ None
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