PPM to Molarity conversion
For dilute aqueous solutions, 1 ppm ≈ 1 mg/L (assuming solution density ≈ 1 g/mL). To convert to molarity:
Molarity = ppm / (Molar Mass × 1000)
Example: 50 ppm of NaCl (M = 58.44 g/mol) = 50 / (58.44 × 1000) = 8.56 × 10⁻⁴ M