What is the percent by volume of solution formed by mixing 25ml of isopropanol with 45ml water?
The percent volume of the solution formed by mixing 25ml of isopropanol with 45ml of water can be calculated using the formula for percent volume per volume (% V / V). In this case, the volume of the solute (isopropanol) is 25 mL, the volume of the solvent (water) is 45 mL, and the total volume of the mixture is 70 mL.
To calculate the percent by volume of the solution, we use the formula:
\[ \% V / V = \frac{Volume\: of\: solute}{Total\: volume\: of\: solution} \times 100 \]
Plugging in the values:
\[ \% V / V = \frac{25\:mL}{70\:mL} \times 100 \]
\[ \% V / V = \frac{25}{70} \times 100 \]
\[ \% V / V = 35.7\% \]
Therefore, the percent by volume of the solution formed by mixing 25ml of isopropanol with 45ml water is 35.7%.
Understanding Percent Volume of Solution Calculation
Solution Composition:
A solution is formed by mixing a solute in a solvent to create a homogeneous mixture. In this case, isopropanol is the solute and water is the solvent.
Calculation:
To calculate the percent by volume of the solution, we need to consider the volume of the solute and the volume of the solvent. By adding these volumes together, we get the total volume of the mixture.
Formula Used:
The formula to calculate the percent by volume of a solution is:
\[ \% V / V = \frac{Volume\: of\: solute}{Total\: volume\: of\: solution} \times 100 \]
Calculation Example:
Given the volume of the solute (25mL) and the volume of the solvent (45mL), we can calculate the percent volume of the solution as follows:
\[ \% V / V = \frac{25\:mL}{70\:mL} \times 100 = 35.7\% \]
Interpretation:
The result of 35.7% indicates that the isopropanol-water solution is composed of 35.7% isopropanol by volume.
In conclusion, understanding how to calculate the percent by volume of a solution is essential in chemistry to determine the composition of a mixture accurately.