When examining the equation for each of the percent solutions above it is very important to note that in all cases the denominator refers to the solution mass or volume and not just the solvent mass or volume thus solution mass is the combined mass of solute and solvent and solution volume is the combined volume of solute and solvent. When the solute is a liquid sometimes it is convenient to express its concentration in volume volume percent v v the definition of v v is wine has about 12 ml of alcohol ethanol per 100 ml of solution wine wouuld have the following v v alcohol content alcoholic beverages often have alcohol content cited as proof. Volume percent or volume volume percent v v is used when preparing solutions of liquids it is very easy to prepare a chemical solution using volume percent but if you misunderstand the definition of this unit of concentration youll experience problems. This type of dilutions describes the ratio of the solute to the final volume of the diluted solution for example to make a 110 dilution of a 1m nacl solution you would mix one part of the 1m solution with nine parts of solvent probably water for a total of ten parts. The following video looks at calculating concentration of solutions we will look at another sample problem dealing with volume volume percent v v for more senior chemistry podcasts search
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