What term describes the extent to which a substance will dissolve in water?

What term describes the extent to which a substance will dissolve in water?

• A. Solubility
• B. Mixability
• C. Miscibility
• D. Reactivity

Answer: (A)

Solubility is the extent to which a substance will dissolve in water. It describes how much solute can be dissolved at a given temperature to form a stable, uniform solution. When a substance dissolves, its particles interact with water molecules; those interactions must overcome the forces holding the solute together. In water, polar or ionic substances typically dissolve more readily because water can form strong interactions with them, while nonpolar substances interact weakly and dissolve less. Temperature also matters: solubility of most solids increases with higher temperature, while the behavior for gases is usually the opposite. Therefore, the term that fits the description is solubility. Mixability isn’t the standard term for dissolving in water, miscibility refers to liquids mixing with each other, and reactivity concerns chemical changes rather than the amount that will dissolve.

Solubility is the extent to which a substance will dissolve in water. It describes how much solute can be dissolved at a given temperature to form a stable, uniform solution. When a substance dissolves, its particles interact with water molecules; those interactions must overcome the forces holding the solute together. In water, polar or ionic substances typically dissolve more readily because water can form strong interactions with them, while nonpolar substances interact weakly and dissolve less. Temperature also matters: solubility of most solids increases with higher temperature, while the behavior for gases is usually the opposite. Therefore, the term that fits the description is solubility. Mixability isn’t the standard term for dissolving in water, miscibility refers to liquids mixing with each other, and reactivity concerns chemical changes rather than the amount that will dissolve.