What is molarity?

What is molarity?

• A. Moles per liter
• B. Moles per second
• C. Grams per liter
• D. Liters per mole

Answer: (A)

Molarity is a measure of concentration that tells you how many moles of solute are dissolved in each liter of solution. It’s defined as M = n/V, where n is the amount of solute in moles and V is the volume of the solution in liters. So the correct description is moles per liter. For example, dissolving 1 mole of a substance in 1 liter of solution gives 1.0 M; dissolving 1 mole in 2 liters gives 0.5 M. The other options describe different ideas: moles per second would be a rate, grams per liter is mass concentration, and liters per mole is the reciprocal of molarity and not how molarity is defined.

Molarity is a measure of concentration that tells you how many moles of solute are dissolved in each liter of solution. It’s defined as M = n/V, where n is the amount of solute in moles and V is the volume of the solution in liters. So the correct description is moles per liter. For example, dissolving 1 mole of a substance in 1 liter of solution gives 1.0 M; dissolving 1 mole in 2 liters gives 0.5 M. The other options describe different ideas: moles per second would be a rate, grams per liter is mass concentration, and liters per mole is the reciprocal of molarity and not how molarity is defined.