Solubility is defined as the ability of one substance to dissolve in another at a given temperature and pressure.

Solubility is defined as the ability of one substance to dissolve in another at a given temperature and pressure.

• A. The rate at which a solute dissolves
• B. The ability of one substance to dissolve in another at a given temperature and pressure
• C. The measure of a substance’s acidity
• D. The tendency of a solute to crystallize

Answer: (B)

Solubility describes how much of one substance can dissolve in another under specific conditions, reaching a saturated state at a given temperature and pressure. It’s about the extent of dissolution available at equilibrium, not how fast the dissolution happens. That’s why the definition includes temperature and pressure, since those conditions determine how much can dissolve. The rate at which dissolution occurs is a different concept called dissolution speed or rate. Acidity refers to how acidic a substance is (pH-related), and crystallization tendency describes whether a solute tends to form solid crystals—neither of these define solubility itself. So the statement that matches the idea of solubility is the one describing the ability to dissolve under those specified conditions.

Solubility describes how much of one substance can dissolve in another under specific conditions, reaching a saturated state at a given temperature and pressure. It’s about the extent of dissolution available at equilibrium, not how fast the dissolution happens. That’s why the definition includes temperature and pressure, since those conditions determine how much can dissolve. The rate at which dissolution occurs is a different concept called dissolution speed or rate. Acidity refers to how acidic a substance is (pH-related), and crystallization tendency describes whether a solute tends to form solid crystals—neither of these define solubility itself. So the statement that matches the idea of solubility is the one describing the ability to dissolve under those specified conditions.