How many mL of acetone are required to make a 8.42 % v/v aqueous solution in a 300 mL volumetric flask?
300*.0842= ???? ml acetone
To calculate the mL of acetone required to make an 8.42% v/v aqueous solution in a 300 mL volumetric flask, you need to know the definition of the term "v/v" and understand the equation to find the desired amount of acetone.
1. Definition of "v/v":
The term "v/v" stands for "volume/volume" and is a way to express the concentration of a solute in a solution. It represents the volume of the solute (in this case, acetone) divided by the total volume of the solution, multiplied by 100 to give a percentage.
2. Equation to calculate the mL of acetone:
To calculate the mL of acetone required, use the following equation:
(mL of acetone) / (total volume of the solution) = (desired % v/v) / 100
Let's substitute the given values into the equation:
(mL of acetone) / (300 mL) = 8.42 / 100
Now, we can solve for the mL of acetone:
(mL of acetone) = (300 mL) * (8.42 / 100)
Calculating the right side of the equation:
(mL of acetone) = 25.26 mL
Therefore, approximately 25.26 mL of acetone is required to make an 8.42% v/v aqueous solution in a 300 mL volumetric flask.