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Cation Elimination Test Observations Added Reagents and their Observations NaOH = Light blue ppt Excess NaOH = undissolved ppt NH3 = Blue ppt Excess NH3 = Dissolved precipitation ; deep blue complex 1. What are the possible Cation/s present? Cu2+ , Zn2+ , Ca2+ , Fe3+ , NH4+

Cation Elimination Test Observations Added Reagents and their Observations NaOH = Light blue ppt Excess NaOH = undissolved ppt NH3 = Blue ppt Excess NH3 = Dissolved precipitation ; deep blue complex 1. What are the possible Cation/s present? Cu2+ , Zn2+ , Ca2+ , Fe3+ , NH4+

Chemistry
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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Cation Elimination Test Observations

Added Reagents and their Observations
NaOH = Light blue ppt
Excess NaOH = undissolved ppt
NH3 = Blue ppt
Excess NH3 = Dissolved precipitation ; deep blue complex

1. What are the possible Cation/s present?
Cu2+ , Zn2+ , Ca2+ , Fe3+ , NH4+   

Cation Confirmatory test Observations

Added Reagents and Observation:
Excess NH3 = Dissolved precipitation ; deep blue complex
KSCN = NVR
K4Fe(CN)6 = NVR
K4Fe(CN)6 = NVR
Na2C2O4 = White precipitation
NaOH (in evap dish) = NVR

2. what are the possible ion/s present? Show a flowchart.
Cu2+ , Zn2+ , Ca2+ , Fe3+ , NH4+ 

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