- Information
- AI Chat
Was this document helpful?
Reactions in Aqueous Solutions
Course: Principles Of Chemistry I Laboratory (CHEM 109)
7 Documents
Students shared 7 documents in this course
University: York College CUNY
Was this document helpful?
Reactions in Aqueous Solutions
Objective- The purpose of this experiment is to determine the unknown contains acquire
knowledge.
Introduction- Qualitative analysis involves carrying an unknown mixture of different
compounds through a series of chemical reactions.
Materials- seven metal ions, six reagents, ten drops of each ion.
Procedure-
1. First I place wells over the grid.
2. Then I put 10 drops of each ion across its corresponding row.
3. Then I put 10 drops of each reagent down its corresponding column.
4. I compare the results of known ions with each reagent to the unknown.
5. The one that matches is my unknown.
0.1 M HCl
0.1 M NaOH
xs= 6M NaOH
xs=6M NH4OH
Unknown
clear
cloudy
clear
clear
Mg
clear
Cloudy, clear
clear
clear
Ni
Clear, green
Cloudy green
Cloudy green
blue
Cr
Clear, dark
blue
Cloudy green
Dark green
cloudy
Zn
Clear
Cloudy, white
clear
clear
Ag
Cloudy white
Brown cloudy
Brown cloudy
clear
The unknown contains: Zn (II)
Unknown number: 12
