Enter the molarity, grams of solute, molar mass of solute, and volume of solution into the calculator to determine the missing variable.
G/Mol To Molarity Formula
The following formula is used to calculate the molarity (M) for a given amount of solute in grams, molar mass, and volume of solution.
M = \frac{g}{MM \cdot V}Variables:
- M is the molarity in moles per liter (M)
- g is the grams of solute
- MM is the molar mass of the solute in grams per mole (g/mol)
- V is the volume of the solution in liters (L)
To calculate the molarity, divide the grams of solute by the product of the molar mass and the volume of the solution.
| Grams of Solute (g) | Molarity (M) | Molarity (mM) |
|---|---|---|
| 0.10 | 0.0017 | 1.7 |
| 0.25 | 0.0043 | 4.3 |
| 0.50 | 0.0086 | 8.6 |
| 0.75 | 0.0128 | 12.8 |
| 1.00 | 0.0171 | 17.1 |
| 1.25 | 0.0214 | 21.4 |
| 1.50 | 0.0257 | 25.7 |
| 2.00 | 0.0342 | 34.2 |
| 2.50 | 0.0428 | 42.8 |
| 5.00 | 0.0855 | 85.5 |
| 7.50 | 0.1283 | 128.3 |
| 10.00 | 0.1711 | 171.1 |
| 12.50 | 0.2139 | 213.9 |
| 15.00 | 0.2566 | 256.6 |
| 20.00 | 0.3422 | 342.2 |
| 25.00 | 0.4277 | 427.7 |
| 30.00 | 0.5132 | 513.2 |
| 40.00 | 0.6843 | 684.3 |
| 50.00 | 0.8554 | 855.4 |
| 58.44 | 1.0000 | 1000.0 |
| Assumes molar mass = 58.44 g/mol (NaCl) and final solution volume = 1.00 L. Formula: M = grams / (molar mass × volume). | ||
What is Molarity?
Molarity (M) is a measure of the concentration of a solute in a solution, or of any chemical species, in terms of amount of substance in a given volume. It is expressed in units of moles per liter (mol/L). Molarity is an important concept in chemistry because it allows chemists to quantify the concentration of a solution, which is crucial for understanding how substances will react with each other in a solution.
How to Calculate Molarity?
The following steps outline how to calculate the molarity of a solution.
- First, determine the grams of solute (g).
- Next, determine the molar mass of the solute (MM).
- Next, determine the volume of the solution (V).
- Finally, calculate the molarity using the formula M = g / (MM * V).
- After inserting the values 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.
Grams of solute (g) = 10 g
Molar mass of solute (MM) = 58.44 g/mol
Volume of solution (V) = 2 L