Calculadora de ppm para Molaridade

The ppm to Molarity Calculator converts concentrations expressed in parts per million (ppm) to molarity (mol/L), a fundamental unit in chemistry. ppm is often used for dilute solutions, representing mg of solute per liter of solution (mg/L). Molarity indicates the number of moles of solute per liter of solution. This tool is essential for laboratories, industries, and students needing to relate these units.

The calculation uses the formula: M = (ppm × ρ) / (MM × 1000), where M is molarity, ppm is concentration in mg/L, ρ is solution density in g/mL (assumed 1 g/mL for dilute aqueous solutions), MM is solute molar mass in g/mol, and 1000 converts mg to g. For dilute aqueous solutions, density is approximately 1 g/mL, simplifying to M = ppm / (MM × 1000).

Use this calculator when preparing solutions from known ppm concentrations, such as in environmental analyses (e.g., heavy metal concentration in water) or chemical formulations. It is useful for converting spectroscopic or chromatographic data, often reported in ppm, to molarity for stoichiometric calculations.

Cautions: the formula assumes solution density of 1 g/mL, valid only for dilute aqueous solutions. For solvents or concentrated solutions, insert actual density. Ensure correct solute molar mass. The calculator does not apply to ppm by volume (ppm v/v) without additional conversion.