Sagot :
Note: Isopropanol is the solute and water is the solvent.
Given:
[tex]\text{volume}_{solute} = \text{25 m L}[/tex]
[tex]\text{volume}_{solvent} = \text{45 m L}[/tex]
Required:
[tex]\% \: \text{by volume}[/tex]
Solution:
[tex]\% \: \text{by volume} = \frac{\text{volume}_{solute}}{\text{volume}_{solute} \: + \: \text{volume}_{solvent}} × 100[/tex]
[tex]\% \: \text{by volume} = \frac{\text{25 m L}}{\text{25 m L} \: + \: \text{45 m L}} × 100[/tex]
[tex]\boxed{\% \: \text{by volume} = 35.71\%}[/tex]