Solutions & Dilution
Dilutions, the mass to weigh out for a target concentration, and molarity against %w/v and ppm.
Solute
drives the mass and the conversions
Try
- Molar mass as weighed
- — g/mol
- Molar mass of the solute
- — g/mol
is a hydrate.
Dilution
C₁V₁ = C₂V₂
Clear whichever field you want solved. The blank one is filled in below.
Solving for —
—
- Fold dilution
- —
- Diluent to add
- —
Weigh out
from the formula above
mol/L
Of the solute proper. For a hydrate the water is not part of this.
mL
Weigh out
—
- Moles of solute
- —
- If you used the solute's molar mass
- —
The classic error
Concentration units
molarity ↔ %w/v ↔ ppm
- Molarity
- —
- Mass concentration
- —
- Percent
- — % w/v
- Parts per million
- — ppm
- Milligrams per mL
- — mg/mL
ppm is read as mg/L, which equals parts per million only while the solution's density is 1 g/mL — true enough for dilute aqueous work, not for a brine.
Serial dilution
In whichever unit you chose for C₁ and C₂ above.
µL
Leave at zero for concentrations only.
The series
| Tube | Concentration | From stock |
|---|