give the factors affecting sollubility?

Answer 1

The most important factors are

1. The type of bonds, whether they are ionic or covalent, when dissolving in a polar solvent like water. E.G., salt dissolves in water because it has ionic bonds and a low lattice energy.

2. Whether hydrogen bonds are formed. (See #3 example.)

3. Are there any lone pairs present if dissolving in a polar solvent like water. E.G., Alcohol dissolves in water because of its lone pairs and hydrogen bonds.

4. Whether you are dissolving a polar compound in a polar compound (or non-polar in non-polar), which would be soluble, or whether you are mixing them up, which would not be soluble. E.G. you can dissolve alcohol in water but not oil.

5. Whether the lattice energy of the crystalline precipitate is greater than the kinetic energy of the solvent. E.G., Silver chloride has an ionic bond but it is not soluble in water because its lattice energy is so great.

All of these factors can be influenced by temperature and other physical conditions. For example, the kinetic energy usually doubles for every 10 degrees of Celsius you increase the temperature. So increasing the temperature can eventually overcome lattice energy and dissolve otherwise insoluble compounds.

Answer 2

Be carefully with the affect of temperature on solubility. A temperature does increase the kinetic energy of the compound to be dissolved, but all that does is speed up the time it takes to dissolve something. It said nothing about the solubility of the compound, that is the amount of material that will dissolve. Increasing the temperature decreases the solubility of CaSO4 but it increases the solubility of NaCl.

Answer 3

factors that affect solubility include but are not limited to:

temperature
pressure
molarity
concentration
molality
and the identity of the substances