What is the general rule for solubility?

Answer 1

"Like dissolves like" is the general statement concerning solubility. Polar substances are said to be "hydrophilic" or water-loving. Nonpolar substances are said to be "hydrophobic" or water-hating.

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Answer 2

1. Nitrates (NO3-) and Chlorates (ClO3-) are always soluble.

2. Alkalai metal ions and NH4 ions are always soluble

3. Halides (Cl-, Br-, I-) are solubleexcept with Ag+, Pb2+, & Hg22

4. Sulfates (SO42-) are soluble except with Ag, Ba2+, Ca2+, Sr2+, Pb2+, & Hg22+

5. Hydroxides (OH-) are insoluble except NaOH & KOH

6. Sulfides (S2-), Carbonates (CO3-), Chromates (CrO42-), and Phosphates (PO43-) are always insoluble.

Answer 3

If it does not dissolve in water then it's non polar, if it does then it means it's polar. (Ex. Butter does not dissolve in water, there for butter is a non polar) If butter dissolve's in cooking oil then cooking oil is non polar.

Answer 4

Rule 1. All compounds of Group IA elements (the alkali metals) are soluble.For example, NaNO3, KCl, and LiOH are all soluble compounds. This means that an aqueous solution of KCl really contains the predominant species K+and Cl- and, because KCl is soluble, no KCl is present as a solid compound.

Rule 2. All ammonium salts (salts of NH4+) are soluble.For example, NH4OH is a soluble compound. Molecules of NH4OH completely dissociate to give ions of NH4+ and OH- in aqueous solution.

Rule 3. All nitrate (NO3-), chlorate (ClO3-), perchlorate (ClO4-), and acetate (CH3COO- or C2H3O2-, sometimes abbreviated as Oac-) salts are soluble.For example, KNO3 would be classified as completely soluble by rules 1 and 3, and thus KNO3 could be expected to dissociate completely in aqueous solution into K+ and NO3- ions.

Rule 4.All chloride (Cl-), bromide (Br-), and iodide (I-) salts are soluble except for those of Ag+, Pb2+, and Hg22+.For example, AgCl is a classic insoluble chloride salt, with a Ksp value of 1.8´ 10-10.

Rule 5. All sulfate ( SO4=) compounds are soluble except those of Ba2+, Sr2+, Ca2+, Pb2+, Hg22+, and Hg2+, Ca2+ and Ag+ sulfates are only moderately soluble.For example, BaSO4 is insoluble (only soluble to a very small extent). Na2SO4 is completely soluble.

Rule 6. All hydroxide (OH-) compounds are insoluble except those of Group I-A (alkali metals) and Ba2+, Ca2+, and Sr2+.For example, Mg(OH)2 is insoluble (Ksp =7.1 ´ 10-12);

NaOH and Ba(OH)2 are soluble, completely dissociating in aqueous solution:

NaOH ® Na+ + OH-,

Ba(OH)2(s) ® Ba2+ + 2OH-

Rule 7. All sulfide (S=) compounds are insoluble except those of Groups I-A and II-A (alkali metals and alkali earths).For example, Na2S is soluble, MnS is insoluble.

Answer 5

Henry's Law : The solubility of a gas in a liquid is directly proportional to the partial pressure of that gas on the surface of the liquid.

Answer 6

solubility is Polar solutes dissolve in polar solvents

Answer 7

The solubility rule is that 'like dissolves like'. This means that a polar solute will dissolve in a polar solvent. Similarly, a non-polar solute will dissolve in a non-polar solvent.

Answer 8

Like Dissolves Like .