Molarity Calculator
Calculate molarity (concentration), moles, or volume of a solution.
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FAQs
What is the difference between molarity and molality?
Molarity (M) is moles per litre of solution and changes with temperature. Molality (m) is moles per kilogram of solvent and is temperature-independent, making it useful for boiling point elevation and freezing point depression.
How do I prepare a 1 M NaCl solution?
Calculate molar mass of NaCl: 23 + 35.5 = 58.5 g/mol. Weigh 58.5 g, dissolve in a small amount of distilled water, transfer to a 1-litre volumetric flask, and fill to the 1-litre mark.
What does higher molarity mean?
Higher molarity means a more concentrated solution — more moles of solute per litre. Concentrated HCl is ~12 M while typical saline IV solution is 0.15 M. Higher concentration generally means stronger chemical activity.