Respuesta :
Answer:
Solvent evaporated = 172.5 mL
Explanation:
Considering:
[tex]Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}[/tex]
Or,
[tex]Moles =Molarity \times {Volume\ of\ the\ solution}[/tex]
Given :
For initial concentration solution :
Molarity = 0.275 M
Volume = 230 mL
The conversion of mL to L is shown below:
1 mL = 10⁻³ L
Thus, volume = 230×10⁻³ L
[tex]Moles=0.275 \times {230\times 10^{-3}}\ moles[/tex]
Moles in the solution = 0.06325 moles
The solvent will evaporated. Let the evaporated solvent be x mL
Left solvent = 230 - x mL = [tex]\frac{230-x}{1000}\ L[/tex]
Moles = 0.06325 moles
Molarity = 1.10 M
So, applying in the expression for molarity as:-
[tex]1.10=\frac{0.06325}{230 - x}\times 1000[/tex]
[tex]1.1\left(230-x\right)=63.25[/tex]
[tex]x=\frac{345}{2}[/tex]
[tex]x=172.5[/tex]
Solvent evaporated = 172.5 mL
