What term describes the amount of solute in a given amount of solution?

• A. Concentration
• B. Molarity
• C. Solubility
• D. Solvent Amount

Answer: (A)

Concentration describes how much solute is present in a given amount of solution. It tells you the amount of dissolved substance relative to the total solution, so higher concentration means more solute in the same amount of solution. It can be expressed in several ways, with molarity (moles of solute per liter of solution) being a common one. Solubility, on the other hand, refers to how much solute can dissolve in a solvent under certain conditions, not how much is actually dissolved in a particular solution. The idea of “solvent amount” isn’t a standard measure of concentration, since concentration is about the ratio of solute to solution (or to solvent, depending on the specific definition).