Predict which of the following compounds are insoluble in water. (Select all that apply.)
-magnesium sulfide, MgS
-calcium carbonate, CaCO3>calcium carbonate, CaCO_3>calcium carbonate, CaCO_3
-magnesium hydroxide, Mg(OH)2>magnesium hydroxide, Mg(OH)_2>magnesium hydroxide, Mg(OH)_2
-potassium chloride, KCl>potassium chloride, KCl>potassium chloride, KCl
pisgahchemist
Favorite Answer
Perhaps you have heard of something called the solubility rules. A great assist in predicting if a compound is soluble in water or not.
MgS - insoluble
CaCO3 - insoluble
Mg(OH)2 - insoluble
KCl - soluble
Anonymous
Magnesium sulfide, calcium carbonate, and magnesium hydroxide are insoluble in water.
Any ionic compound containing the sulfide ion (exceptions: compounds of ammonium ion, alkali metal cations, calcium, strontium, and barium ions), the carbonate ion (exceptions: compounds containing ammonium ion and alkali metal cations), the phosphate ion (exceptions: compounds containing ammonium ion and the alkali metal cations), and the hydroxide ion (exceptions: compound containing ammonium ion, calcium, strontium, and barium ions as well as alkali metal cations) is insoluble in water.
Note: exceptions make the compound soluble.
Anonymous
Mg(OH) is the only one insoluble