I need to know the normal trend of solubility with increasing temperature?

Question

I NEED TO HAVE THE SOURCE OR ELSE!!

Answer 1

Solubility refers to the amount of solute that can dissolve in a given amount of solvent at a given temperature. The standard unit for solubility is molarity (M), which is the amount of solute (in moles) divided by the amount of solvent (in liters).

Generally, for ionic solids like salt and sugar, solubility increases with increasing temperature. This is because the dissolving process is endothermic (takes heat from the surrounding). That means that the more heat you provide to the system, the more solute will dissolve. On the other hand, some exceptional ionic solids have dissolving processes that are exothermic ( CaCl2, for example). So, for those solids, solubility decreases with increasing temperature. \

And generally for gases, solubility (in water at least) decreases with increasing temperature for the same reason as CaCl2 - theirs is also an exothermic reaction.

For more info,

http://genchem.chem.wisc.edu/sstutorial/text11/Tx112/tx112.html
http://www.pc.chemie.uni-siegen.de/pci/versuche/english/v44-9.html

Answer 2

The 'normal' trend with increasing temperature is an increase in solubility.
This is not always true in all cases but is a good generalization.

To quite the source listed below,
"Normally, solutes become more soluble in a given solvent at higher temperatures." (quote located near bottom of page)

Answer 3

as temperature goes up so does the solubility.