About Molarity Calculations
Molarity (M) is a measure of the concentration of a solute in a solution, defined as the number of moles of solute per liter of solution. It's one of the most commonly used concentration units in chemistry.
Common Molecular Weights:
| Compound |
Formula |
Molecular Weight (g/mol) |
| Water |
H₂O |
18.015 |
| Sodium Chloride |
NaCl |
58.44 |
| Hydrochloric Acid |
HCl |
36.46 |
| Sulfuric Acid |
H₂SO₄ |
98.08 |
| Sodium Hydroxide |
NaOH |
40.00 |
| Glucose |
C₆H₁₂O₆ |
180.16 |
Applications of Molarity:
- Preparing chemical solutions with precise concentrations
- Dilution calculations for laboratory work
- Stoichiometric calculations in chemical reactions
- Titration experiments in analytical chemistry
- Biological buffer preparation
Important Notes:
- Molarity is temperature-dependent because volume changes with temperature
- For accurate results, use precise measurements of mass and volume
- Always use the correct molecular weight for your specific compound
- Molarity differs from molality (which uses mass of solvent instead of volume of solution)