How would we convert that to a concentration in parts per million (ppm) ? This means that there are 9 000 parts of NaCl in every 1 000 000 parts of the solution.īut the concentration of a solution is sometimes given as a percentage.Ī percentage concentration tells you how many parts of solute are present in 100 parts of solution.įor example, the ethanol content in wine is often given as about 12%(v/v), that is, 12% of the volume of the wine is ethanol, or, there are 12 parts of ethanol in every 100 parts of solution. Recall that, in general, concentration tells you how much solute is present in a solution.Ī concentration in parts per million (ppm) tells you how many parts of solute are present in 1 000 000 parts of solution.įor example, a saline solution is a dilute aqueous solution of sodium chloride, NaCl (aq), with a concentration of 9 000 ppm. Parts per million and Percentage Concentration Calculations
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