Solubility — Science definition
The maximum amount of a solute that can dissolve in a given amount of solvent at a specific temperature, often given in grams per 100 g of water.
Where it is taught
- Solutions & Solubility — Solutions & Dissolved Particles, Physical Science: Chemistry, Grade 11
In use
Its interactions with solute particles help explain why many ionic or polar substances dissolve, but polarity alone does not guarantee high solubility.
Solutions & Solubility
Questions using solubility
Problem 1
Answer and explanation
192 g
300 g of water is 3 times 100 g, so 64 g × 3 = 192 g dissolves.
Problem 2
Answer and explanation
16 g
Only 34 g can dissolve in 100 g of water, so 50 g − 34 g = 16 g stays undissolved.
Problem 3
Hints
Solubility is temperature-specific.
Answer and explanation
20×250/100=50 g.
Problem 4
Answer and explanation
Under the stated model, 20.0 g dissolves and 10.0 g remains solid. Stirring can speed equilibration but does not change this selected equilibrium capacity at fixed conditions.
Under the stated model, 20.0 g dissolves and 10.0 g remains solid. Stirring can speed equilibration but does not change this selected equilibrium capacity at fixed conditions.
Response criteria
- Use the stated measurements or conditions, with correct units.
- Connect the result to the chemical mechanism or evidence relationship.
- Identify the assumption, model limit or further evidence requested.