Frequently Asked Questions
What is molarity and how is it calculated?
Molarity (M) is the number of moles of solute per liter of solution. Molarity = moles / liters. To prepare a 1.0 M solution of NaCl, dissolve 58.44 g (1 mole) of NaCl in water and bring the total volume to 1.000 L. Molarity is the most common concentration unit in chemistry labs.
What is the difference between molarity and molality?
Molarity (mol/L) is moles per liter of solution - it changes with temperature because liquid volume expands. Molality (mol/kg) is moles per kilogram of solvent - it does not change with temperature. Molality is used for colligative properties (boiling point elevation, freezing point depression) because it is temperature-independent.
How do I convert between concentration units?
To convert molarity to g/L: multiply by molar mass (M x g/mol = g/L). To convert g/L to molarity: divide by molar mass. To convert to ppm (mg/L for dilute aqueous solutions): 1 ppm = 1 mg/L = 0.001 g/L. For w/w%: %(w/w) = (g solute / g solution) x 100; you need solution density to convert to molarity.
Provided by AllCalculators.io
Free online calculators for everyday. No registration required.
Estimates for informational purposes only.
Important Disclaimer: Estimates for informational purposes only.
This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.