The solubility of a gas in a liquid generally decreases with increasing temperature. This is because gas molecules are more energetic at higher temperatures and therefore have a greater tendency to escape from the liquid. For example, the solubility of oxygen in water decreases by about 20% for every 10°C increase in temperature.

Solubility of Solids

The solubility of a solid in a liquid generally increases with increasing temperature. This is because the higher the temperature, the more kinetic energy the molecules of the solvent have. This increased kinetic energy allows the solvent molecules to break down the intermolecular forces holding the solid particles together, allowing them to dissolve more easily. For example, the solubility of sugar in water increases by about 2% for every 10°C increase in temperature.

There are a few exceptions to these general rules. For example, the solubility of some gases, such as carbon dioxide, actually increases with increasing temperature. This is because carbon dioxide reacts with water to form carbonic acid, which is more soluble than carbon dioxide gas.