Expression of Weights and Concentration |
Three of the more common methods are defined as follows:
| weight percent | = | weight of solute weight of solution |
x | 100 |
| volume percent | = | weight of solute volume of solution |
x | 100 |
| weight-volume percent | = | weight of solute, g. volume of solution, ml |
x | 100 |
Weight in Chemical Units
| Chemical Unit | Weight of Unit in Grams Given by |
Metric Units to Chemical Units |
| Formula-weight (fw) | gfw | no. fw = grams of substance gfw |
| Mole | gmw | no. mole = grams of species gmw |
| Equivalent (eq) | eq wt | no. eq = grams of substance eq wt |
Concentration in Chemical Units
| Chemical Term for Concentration | Method of Calculation from Chemical Units of Weight | Method of Calculation from Metric Units of Weight |
| Molarity, M | M = no. moles L soln |
M = grams solute L soln x gmw |
| Normality, N | N = no. eq L soln |
N = grams solute L soln x eq wt |