4. Use your solubility table to predict whether the following compounds will be soluble in water
at 25°C: (5 points) CompoundSoluble/Insoluble CaSO4 K2SO4 Ba(OH)2 BeS CuCl2
Solubleinsolüble Compound Mg(NO3)2 CaCl2 Al2S3 (NH4)3PO4 SrCO3
Solution
First see the rules of solubility:1)Rule for phosphates says all phosphates are insoluble except for
the alkali metals and NH4+.
2) Rule for nitrates: All nitrates are soluble.
3) Rule for sulfides: All sulfides are insoluble except those of the alkali metals, alkali earths, and
NH4+.
4) Rule for Chlorides: All chlorides are soluble except AgCl, Hg2Cl2, and PbCl2
Mg(NO3) Soluble in water
CaCl2 Soluble in water
Al2S3: Aluminum sulfide actually reacts with water to form aluminum hydroxide and hydrogen
sulfide gas.Thus it decomposes in water instead of dissolving.
(NH4)3PO4: Soluble in water
SrCO3: not soluble in water. t dissolves in water
caso4 : yes Soluble in water
K2SO4 :yes Soluble in water
Ba(OH)2 : yes Soluble in water
BeS: yes Soluble in water
CuCl2: yes Soluble in water.
4. Use your solubility table to predict whether the following compoun.pdf
1. 4. Use your solubility table to predict whether the following compounds will be soluble in water
at 25°C: (5 points) CompoundSoluble/Insoluble CaSO4 K2SO4 Ba(OH)2 BeS CuCl2
Solubleinsolüble Compound Mg(NO3)2 CaCl2 Al2S3 (NH4)3PO4 SrCO3
Solution
First see the rules of solubility:1)Rule for phosphates says all phosphates are insoluble except for
the alkali metals and NH4+.
2) Rule for nitrates: All nitrates are soluble.
3) Rule for sulfides: All sulfides are insoluble except those of the alkali metals, alkali earths, and
NH4+.
4) Rule for Chlorides: All chlorides are soluble except AgCl, Hg2Cl2, and PbCl2
Mg(NO3) Soluble in water
CaCl2 Soluble in water
Al2S3: Aluminum sulfide actually reacts with water to form aluminum hydroxide and hydrogen
sulfide gas.Thus it decomposes in water instead of dissolving.
(NH4)3PO4: Soluble in water
SrCO3: not soluble in water. t dissolves in water
caso4 : yes Soluble in water
K2SO4 :yes Soluble in water
Ba(OH)2 : yes Soluble in water
BeS: yes Soluble in water
CuCl2: yes Soluble in water
