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vladimir1956 [14]
3 years ago
12

What is the %v/v concentration of a solution made by adding 25 ml of acetone to 75 ml of water?

Chemistry
2 answers:
lesya [120]3 years ago
8 0

Hey there!


V/V % = ( volume of solute ( mL ) / volume solution ) * 100


volume solute = 25 mL acetone


Volume solvent = 75 mL water


So :


v/v =        25

            ------------ * 100

              25 + 75


v/v = ( 25 / 100 ) * 100


v/ v = 25%


hope this helps!

Artemon [7]3 years ago
8 0

Answer:

The answer is: 25 %

Explanation:

In order to know the concentration, we need to know the amount of solution we have, that is:  25 ml of acetone + 75 ml of water = 100 ml of solution. Now, as the units are in volume, and we need to know te concentration in %v/v (percentage volume/volume), we can operate normally (in the same units). The concentration in % v/v is going to to be the amount of the solute over the amount of solution multiplied by 100, and in this case the solute is the acetone:

%v/v = (25/100) * 100 = 25 %

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