4. A 230.-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning the solution is 1.10 M. What v
1 answer:
Answer:
Solvent evaporated = 172.5 mL
Explanation:
Considering:
Or,
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
Moles in the solution = 0.06325 moles
The solvent will evaporated. Let the evaporated solvent be x mL
Left solvent = 230 - x mL =
Moles = 0.06325 moles
Molarity = 1.10 M
So, applying in the expression for molarity as:-
<u>Solvent evaporated = 172.5 mL</u>
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