Does Increasing temperature always increases the solubility of a solute in a solvent?

Answer 1

hot water does not hold dissolved oxygen well because the water molecules separate and can't group around the dissolved oxygen, so if oxygen can be considered a solute and water a solvent then the answer is no

Answer 2

As a general rule you are correct. As you increase temperature you will observe an increases in solubility.

However, this is not always true. with gases this does not tend to work. In fact in gases the opposite will normally happen and your solubility will decrease.

For this reason it is worth noting the boiling points of you solvent. As many organic solvents have low boiling points.

Answer 3

Increase in temperature does not always result in an increase in solubility, although it almost always does. There are a few exceptions.

Answer 4

Yes.