Question

Solution concentrations are always in terms of:

A. (Amount Solute)/(Amount Solvent)
B. (Amount Solvent)/(Amount Solution)
C. (Amount Solvent)/(Amount Solute)
D. (Amount Solute)/(Amount Solution)

Answer 1

The correct answer to the question about solution concentrations is D: (Amount Solute)/(Amount Solution). Concentrations reveal the amount of solute in a given quantity of solution and can be expressed in multiple forms, like molarity and percent solutions.

Step-by-step explanation:

The correct answer is D: (Amount Solute)/(Amount Solution). Solution concentrations are calculated by the ratio of the amount of solute to the amount of solution, not just solvent. When preparing a solution of known concentration, a measured amount of solute is dissolved in enough solvent to make the desired volume of the solution, and the concentration can be expressed using mass, volume, or mole units.

Common methods for expressing concentration of a solution include molarity, percent solutions, parts per thousand (ppt), parts per million (ppm), parts per billion (ppb), and molality. Molarity, for example, is the number of moles of solute per liter of solution, and percent solutions can be measured by the mass or volume ratio of solute to solution.