Calculate molar concentration from mass, molecular weight, and volume. Perfect for chemistry students and professionals.
To prepare 500 mL of 0.1 M NaCl solution:
Molarity (M) is a measure of concentration that represents the number of moles of solute per liter of solution. It's one of the most common ways to express concentration in chemistry.
Molarity = (moles of solute) / (liters of solution). You can also calculate it using: Molarity = (grams of solute) / (molecular weight × liters of solution).
Molarity is expressed in moles per liter (mol/L or M). For example, a 1 M solution contains 1 mole of solute per liter of solution.
Molarity (M) is moles per liter of solution, while molality (m) is moles per kilogram of solvent. Molarity changes with temperature due to volume changes, but molality doesn't.
Weigh the required amount of solute, dissolve it in a small amount of solvent, then dilute to the final volume. Use a volumetric flask for accurate volume measurement.
Normality = Molarity × n, where n is the number of equivalents per mole. For acids, n is the number of H+ ions; for bases, n is the number of OH- ions.
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