The molarity to ppm calculators is an essential analytical chemistry tools that help scientists and researchers convert using PPM = Molarity × Molecular Weight × 1000 formula.
Molarity (M) represents the number of moles of solute per liter of solution, while PPM expresses the concentration as parts of solute per million parts of solution by mass or volume.
When analyzing water contamination, environmental scientists might need to convert a molarity measurement of 0.001 M copper sulfate to PPM to comply with regulatory reporting standards.
Molarity to PPM Calculator
| Chemical Compound | Molecular Weight (g/mol) | Molarity (M) | PPM Result |
|---|---|---|---|
| NaCl | 58.44 | 0.01 | 584.4 |
| H₂SO₄ | 98.079 | 0.005 | 490.4 |
| KMnO₄ | 158.034 | 0.002 | 316.07 |
| CuSO₄ | 159.609 | 0.008 | 1,276.87 |
| AgNO₃ | 169.87 | 0.003 | 509.61 |
| KCl | 74.55 | 0.01 | 745.5 |
| MgSO₄ | 120.37 | 0.005 | 601.85 |
| CaCl₂ | 110.98 | 0.004 | 443.92 |
| NH₄Cl | 53.49 | 0.02 | 1,069.8 |
| NaHCO₃ | 84.01 | 0.01 | 840.1 |
| HCl | 36.46 | 0.1 | 3,646 |
| Na₂SO₄ | 142.04 | 0.005 | 710.2 |
| FeCl₃ | 162.2 | 0.003 | 486.6 |
| C₂H₅OH (Ethanol) | 46.07 | 0.02 | 921.4 |
| K₂Cr₂O₇ | 294.19 | 0.001 | 294.19 |
Molarity to PPM Conversion Formula
The formula to convert molarity to parts per million is:
PPM = Molarity × Molecular Weight × 1000Where:
- PPM is parts per million
- Molarity is in moles/liter (M)
- Molecular Weight is in grams/mole (g/mol)
- 1000 is the conversion factor for liters to milliliters
Converting 0.02 M NaCl (sodium chloride) to PPM.
Given:
- Molarity = 0.02 M
- Molecular Weight of NaCl = 58.44 g/mol
Calculation: PPM = 0.02 M × 58.44 g/mol × 1000
PPM = 1,168.8The 0.02 M NaCl solution equals 1,168.8 PPM.
How to Convert Molarity to PPM?
- Identify the Molecular Weight
- Look up the molecular weight of your compound.
- Add the atomic weights of all atoms in the molecule.
- Apply the Conversion Formula
- Multiply molarity by molecular weight.
- Multiply by 1000 to convert to PPM.
- Verify Units
- Ensure all units are consistent.
- Check that the final answer is dimensionless.
Let’s work through an example using potassium permanganate (KMnO₄):
Given:
- Molarity = 0.005 M
- Molecular Weight of KMnO₄ = 158.034 g/mol
Step-by-step calculation:
- Set up the equation: PPM = 0.005 M × 158.034 g/mol × 1000
- Perform the multiplication: PPM = 790.17
A0.005 M KMnO₄ solution equals 790.17 PPM.
References
- National Institute of Standards and Technology (NIST): Chemical Reference Data
- American Chemical Society: Chemistry Resources
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