Volume Percent Formula

This is considered as the common expression which is used to express concentration. The percent solutions can be various forms such as weight volume percentage, volume percentage or weight percentage. This percentage can be calculated by using the fraction of weight or volume of the solute and the volume or weight of the solution or whatever the case is. In this article, we will learn percent by volume and mass volume percent along with their examples.

Percent By Volume

The volume percent is related to the molar percent but here you will find the difference which says that this volume percent is expressed by multiplying 100. This helps in expressing the concentration of liquids solutes in the solution. It is one of the common formulas that are used in chemistry. It is helpful in expressing the solute concentration in the solution. This volume percent formula is used in pharmaceuticals as well for expressing the solute concentration in the solution.

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Percent By Volume Formula

This is always expressed in the form of % and also called %V/V and liquid units are taken in ml. The volume by volume percentage formula is mentioned below:

\[\text{Volume Percent=}\frac{\text{Volume of Solute}}{\text{Volume of Solution}}\times100\]

Example: If 28 mL of ethanol is combined with water to produce 250 mL of solution, calculate the volume/volume percent.

Solution: Given:

Volume of solute = 28 mL

Volume of the solution = 250 mL

Using the formula:

\[\text{Volume Percent=}\frac{\text{Volume of Solute}}{\text{Volume of Solution}}\times100\]

\[\frac{28mL}{250mL}\times100\]

= 11.2 % 

Mass Volume Percent Formula

This is also one of the common formulas which are used to simply calculate the mass volume percent using the fraction of the mass of the solute and the volume of the solution. Its formula is given below:

\[\frac{\text{Mass of Solute(g)}}{\text{Volume of Solution(mL)}}\times100\]

Example: Mr A dissolved 50g of brown sugar in 700 mL of brown sugar solution. Calculate the mass by volume percentage.

Solution: This can be calculated by the following formula:

\[\frac{\text{Mass of Solute(g)}}{\text{Volume of Solution(mL)}}\times100\]

Mass by volume% 

\[\frac{50g}{700mL}\times100\]

= 7.14 %

Conclusion

Thus to wrap up the discussion we can say that percent by volume is an easy formula to calculate and express the concentration of solute in the solution and called %V/V and it is related to molar concentration. Here, in this article, we learned about percent by volume definition and formulas, mass volume percent and formula along with their examples which will help you how to use the formulas.