Answer:
The volume of water evaporated is 199mL
Explanation:
Concentration is calculated with the following formula
[tex]C=\frac{n}{V}[/tex]
where n is the number of moles of solute and V is the volume of the solution (in this case is the same as the solvent volume) in liters.
So we isolate the variable n to know the amount of moles, using the volume given in liters
[tex]230mL=0.23L[/tex]
[tex]n=C*V=0.240 M*0.23L=0.055 mol[/tex]
Now, we isolate the variable V to know the new volume with the new concentration given.
[tex]V=\frac{n}{C} =0.055mol/1.75M=0.031L=31mL[/tex]
Finally, the volume of water evaporated is the difference between initial and final volume.
[tex]V_{ev}= V_{i} -V_{f} =230mL-31mL=199mL[/tex]
