Formula
Amount concentration, as defined for moles per liter:
mol/L = moles / liters
IUPAC calls this amount concentration. A milliliter volume is converted to liters first. Diluting a stock solution is a different question and has its own page.
Assumptions
- The volume is the finished solution, not only the solvent you poured in.
- The amount is already in moles. This page does not convert a mass with a molar mass.
- The solution is well mixed.
Worked example
0.5 moles in 2 liters is 0.25 mol/L.
Input definitions
- Amount
- Moles of solute. Zero is allowed.
- Solution volume
- Liters or milliliters of the whole solution.
Limitations
This is not a recipe for mixing a chemical, and it does not check whether the solute dissolves. Lab safety stays with the chemical's own instructions.
Questions
What is a molar?
One molar, written 1 mol/L, is one mole of solute in one liter of solution.
Why is there no grams field?
Grams become moles only after you divide by a molar mass. That mass is different for every substance, so this page starts from moles.