Home
Back
Molarity Formula:
| From: | To: |
Molarity (M) is a measure of concentration in chemistry, defined as the number of moles of solute per liter of solution. It is one of the most commonly used units for expressing concentration in chemical laboratories and industrial processes.
The calculator uses the molarity formula:
Where:
Explanation: The formula calculates the number of moles by dividing mass by molecular weight, then divides by volume to get concentration per liter.
Details: Accurate molarity calculation is essential for preparing chemical solutions, conducting experiments, quality control in manufacturing, and ensuring proper reaction stoichiometry in chemical processes.
Tips: Enter mass in grams, molecular weight in g/mol, and volume in liters. All values must be positive numbers. Ensure molecular weight is accurate for the specific compound being used.
Q1: What is the difference between molarity and molality?
A: Molarity is moles per liter of solution, while molality is moles per kilogram of solvent. Molarity is temperature-dependent, while molality is not.
Q2: How do I find the molecular weight of a compound?
A: Molecular weight is the sum of atomic weights of all atoms in the molecule. It can be found on chemical labels, in chemical databases, or calculated from the chemical formula.
Q3: Can I use milliliters instead of liters?
A: Yes, but you must convert milliliters to liters by dividing by 1000, since molarity is defined per liter of solution.
Q4: Why is molarity important in chemical reactions?
A: Molarity allows chemists to measure exact amounts of reactants, ensuring proper stoichiometric ratios and predictable reaction outcomes.
Q5: What are common molarity ranges used in laboratories?
A: Common concentrations range from millimolar (0.001 M) to several molar, depending on the application. Stock solutions are often concentrated, while working solutions are diluted.