Seoyeon needs to determine the identity of an unknown salt. She dissolved the sample in the appropriate solvent, and the following are the results of the qualitative analysis.
Seoyeon needs to determine the identity of an unknown salt. She dissolved the sample in the appropriate solvent, and the following are the results of the qualitative analysis.
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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Seoyeon needs to determine the identity of an unknown salt. She dissolved the sample in the appropriate solvent, and the following are the results of the qualitative analysis.
Transcribed Image Text:Qualitative Analysis of Cation
Test tube
Reagent/Treatment
1
6 M HCI
2
3
5% thioacetamide in pH 0.5
5% thioacetamide, 15 M NH3
3 M (NH4)2CO3
4
5
sodium tetraphenylborate
flame tests
ammonia-formation test
Qualitative Analysis of Anion
Test tube
1
Reagent Added/ Treatment Performed
1.6 M HCI, boiled
2. Paper test with 0.1 M Pb(CH3COO)2
0.1 M BaCl2
2
3
1.0.1 M AgNO3
2. Precipitate was separated
3.6 M NH3 was added.
4
1.0.1 M FeCl3
2. hexane
1. chlorine water
2. hexane
LO
5
Results Obtained
no precipitate formed
no precipitate formed
no precipitate formed
no precipitate formed
no precipitate formed
no change in the flame color
red litmus paper changed its color to
blue
Result
no visual change was observed.
no precipitate was observed
the formation of a white precipitate was
observed.
the precipitate was dissolved
completely
no change in the color of the hexane
layer
no change in the color of the hexane
layer
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