Home
Back
Molarity Formula:
| From: | To: |
Molarity (M) is a measure of the concentration of a solute in a solution, defined as the number of moles of solute per liter of solution. It is one of the most commonly used units of concentration in chemistry.
The calculator uses the molarity formula:
Where:
Explanation: The formula calculates the number of moles of solute (mass divided by molecular weight) and divides by the volume of the solution to determine concentration.
Details: Accurate molarity calculation is essential for preparing solutions with precise concentrations, which is critical for chemical reactions, laboratory experiments, and various industrial processes.
Tips: Enter mass in grams, molecular weight in g/mol, and volume in liters. All values must be positive numbers greater than zero.
Q1: What's 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 convert between different concentration units?
A: Conversions require knowing the density of the solution. For dilute aqueous solutions, molarity and molality are approximately equal.
Q3: Why is molecular weight important in molarity calculations?
A: Molecular weight converts mass to moles, which is necessary to calculate the number of particles in a given mass of substance.
Q4: Can I use this calculator for solutions with multiple solutes?
A: This calculator is designed for single solute solutions. For multiple solutes, you would need to calculate each separately.
Q5: What precision should I use for my measurements?
A: Use the highest precision available for your equipment. Typically, analytical balances measure to 0.0001g and volumetric flasks to 0.01L precision.