Question

if the percent by volume is 2% and the volume of solution is 250 mL what is the volume of solute and solution

Answer 1

Solute = 5 mL; solution = 250 mL

Step-by-step explanation:

The formula for percent by volume is

`\text{Percent by volume} = \frac{\text{Volume of solute}}{\text{Volume of solution}}* 100 \, \%`

If you have 250 mL of a solution that is 2 % v/v,

`\begin{array}{rcl}2 \, \% & = & \frac{\text{Volume of solute}}{\text{250 mL}}* 100 \, \%\\\\2 * \text{ 250 mL} & = & \text{Volume of solute} * 100\\\text{Volume of solute} & = & \frac{2 * 250\text{ mL}}{100}\\\\ & = & \textbf{5 mL}\\\end{array}`

If there is no change of volume on mixing,

Volume of solution = 250 mL

-Volume of solute = 5

Volume of solvent = 245 mL