CHEM 121 Ionic Solutions Name…………………. Section: …….. Date :………… Solutions Name of
ID: 881565 • Letter: C
Question
CHEM 121 Ionic Solutions Name………………….
Section:…….. Date:…………
Solutions
Name of compound
Formula of compound
Description
1.Ammonium Carbonate
(NH4)2CO3
Clear Colorless
2.Barium Acetate
Ba(C2H6O2)2
Clear, colorless liquid
3.Calcium Chloride
CaCl2
colourless
4.Copper(II) Bromide
CuBr2
Yellowish
5.Potassium Chromate
K2CrO4
Clear yellow
6.Silver Sulfate
AgSO4
violet
Data Table
1
(NH4) CO2
2
Ba(C2H6O2)2
3
CaCl2
4
CuBr2
5
K2CrO4
6
Ag2SO4
1
(NH4)2 CO2
N/A
White ppt like mucus
White ppt cloudy
Milky blue
Clear yellow
Clear colorless no ppt
2
Ba(C2H6O2)2
N/A
N/A
Clear colorless
Light blue clear
Bright yellow
BaCrO4
cloudy
3
CaCl2
N/A
N/A
N/A
Clear colorless
Yellow clear
CaCrO4
Milky ppt
4
CuBr2
N/A
N/A
N/A
N/A
Copper color ppt
CuCrO4
Milky white ppt
AgBr2
5.K2CrO4
N/A
N/A
N/A
N/A
N/A
Brown ppt
AgCrO4
6
Ag2SO4
N/A
N/A
N/A
N/A
N/A
Discussion Questions:
For each of the mixtures where a precipitate was observed, write a complete balanced equation indicating which of the products was the solid formed.
Discussion of the results
Discuss your results comparing your predictions with the actual findings. Be specific when giving examples. Are these results confirmed by the rules in the solubility table? Please explain.
Conclusion.
Name of compound
Formula of compound
Description
1.Ammonium Carbonate
(NH4)2CO3
Clear Colorless
2.Barium Acetate
Ba(C2H6O2)2
Clear, colorless liquid
3.Calcium Chloride
CaCl2
colourless
4.Copper(II) Bromide
CuBr2
Yellowish
5.Potassium Chromate
K2CrO4
Clear yellow
6.Silver Sulfate
AgSO4
violet
Explanation / Answer
Discussion Questions:
For each of the mixtures where a precipitate was observed, write a complete balanced equation indicating which of the products was the solid formed.
(NH4)2CO3 Ba(C2H6O2)2
1) With ammonium carbonate
(NH4)2CO3 + Ba(C2H6O2)2 --> BaCO3(s) + 2NH4C2H6O2 (aq)
(NH4)2CO3 + CaCl2 -->CaCO3 (s) + 2NH4Cl
2) with Barium acetate
Ba(C2H6O2)2 + K2CrO4 ---> BaCrO4 (solid) + 2KC26O2
3) with Calcium chloride
CaCl2 + Ag2SO4 --> 2AgCl (solid) + CaSO4
4) With CuBr2
CuBr2 + K2CrO4 --> CuCrO4 ( solid) + 2KBr
CuBr2 + Ag2SO4 --> CuSO4 + 2AgBr (solid)
5) With K2CrO4
K2CrO4 + Ag2SO4 --> Ag2CrO4 ( solid) + K2SO4
6) Ag2SO4
Ag2SO4 + CaCl2 --> 2AgCl (s) + CaSO4 (aq)
Ag2SO4 + CuCBr2 --> 2AgBr(s) + CuSO4 (aq)
Ag2SO4 + K2CrO4 --> Ag2CrO4 ( s) + K2SO4