ACTIVITY 2. PERCENTAGE BY VOLUME Instruction. Read and analyze the problem. Write your answer and the solution in the answer sheet.
1.What is the percentage concentration of a solution made by dissolving 12 ml of alcohol in 24 ml of water?
2.Find the concentration of a solution made by dissolving 35 ml of vinegar in 45 ml of solution.
3.What is the concentration of a solution made by dissolving 24 ml of ethyl alcohol in 48 ml of water? 2 3
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Answer:
Hello!
We have the following information:
% V / V (percentage of volume per volume) =?
V1 (solute volume) = 20.0 mL
V (volume of the solution) = solute + solvent = 20.0 + 80.0 = 100.0 mL
We apply the data to the formula of volume percentage of the solute per volume of solution, we will have:
\%\:v/v = \dfrac{v_1}{v} *100%v/v=
v
v
1
∗100
\%\:v/v = \dfrac{20.0}{100.0} *100%v/v=
100.0
20.0
∗100
\%\:v/v = \dfrac{2000.0}{100.0}%v/v=
100.0
2000.0
\boxed{\boxed{\%\:v/v = 20}}\Longleftarrow(percentage\:concentration)\end{array}}\qquad\checkmark
I Hope this helps✨