Enter the density of a solution and the molar mass of the solute into the calculator to determine the molarity of the solution.
Density to Molarity Formula
The following formula is used to convert density to molarity.
M = frac{D}{MM}Variables:
- M is the molarity of the solution (mol/L)
- D is the density of the solution (g/mL)
- MM is the molar mass of the solute (g/mol)
To convert density to molarity, divide the density of the solution by the molar mass of the solute.
What is Molarity?
Molarity is a measure of the concentration of a solute in a solution, or the number of moles of solute per liter of solution. It is one of the most common units used to express the concentration of a solution in chemistry. Molarity is important for calculating dilutions and for performing stoichiometric calculations in chemical reactions.
How to Calculate Molarity from Density?
The following steps outline how to calculate the molarity from density.
- First, determine the density of the solution (D) in grams per milliliter (g/mL).
- Next, determine the molar mass of the solute (MM) in grams per mole (g/mol).
- Next, gather the formula from above = M = D / MM.
- Finally, calculate the molarity (M) in moles per liter (M).
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Density of the solution (D) = 1.05 g/mL
Molar mass of the solute (MM) = 58.44 g/mol