How to Use the Calculator
- Enter the molarity (M) of your solution in moles per liter (mol/L). This is the concentration of the solute in the solution.
- Enter the molar mass of the solute in grams per mole (g/mol). This is the mass of one mole of the solute.
- Click the "Calculate" button to convert the molarity to parts per million (ppm).
- The result will be displayed in ppm. Note that 1 ppm is equivalent to 1 mg/L for substances with a molar mass of approximately 1 g/mol.
Understanding the Formula
The calculator uses the following formula to convert molarity to ppm:
ppm = Molarity × 1000 × Molar Mass
This formula works because:
- Molarity is in moles per liter (mol/L)
- Multiplying by 1000 converts the volume from liters to milliliters (mL/L to mL/μL)
- Multiplying by the molar mass converts the moles to grams (g/mol)
Example Calculation
Suppose you have a solution with a molarity of 0.01 M (0.01 moles per liter) of sodium chloride (NaCl), which has a molar mass of approximately 58.5 g/mol.
The calculation would be:
ppm = 0.01 mol/L × 1000 mL/L × 58.5 g/mol = 585 ppm
So, the concentration of sodium chloride in the solution is 585 ppm.
Applications
This calculator is useful in various fields including:
- Environmental science for measuring pollutant concentrations in water
- Chemistry for preparing and analyzing solutions
- Food and beverage industry for nutrient and contaminant analysis
- Water treatment for monitoring mineral content