Molarity is defined as the number of moles of solute per unit of what?

Molarity is defined as the number of moles of solute per unit of what?

• A. Moles of solute per liter of solvent
• B. Moles of solute per liter of solution
• C. Grams of solute per liter of solution
• D. Moles of solvent per liter of solution

Answer: (B)

Molarity measures how much solute is present in a given volume of solution, specifically the number of moles of solute divided by the total volume of the solution in liters. This means the concentration uses the final volume after the solute is dissolved, not just the solvent’s volume, and it’s expressed as moles per liter of solution. It differs from grams per liter because molarity uses moles (a count of particles) rather than mass. It also differs from a per-kilogram-of-solvent measure (molality). For example, dissolving 1 mole of solute in enough solvent to make exactly 1 liter of solution yields a 1 M solution; if the final volume is larger or smaller, the molarity adjusts accordingly.

Molarity measures how much solute is present in a given volume of solution, specifically the number of moles of solute divided by the total volume of the solution in liters. This means the concentration uses the final volume after the solute is dissolved, not just the solvent’s volume, and it’s expressed as moles per liter of solution. It differs from grams per liter because molarity uses moles (a count of particles) rather than mass. It also differs from a per-kilogram-of-solvent measure (molality). For example, dissolving 1 mole of solute in enough solvent to make exactly 1 liter of solution yields a 1 M solution; if the final volume is larger or smaller, the molarity adjusts accordingly.