How many milliliters of glacial acetic acid are needed to prepare 2.0 L of a 10.0% v/v acetic acid?

To determine how many milliliters of glacial acetic acid are needed to prepare a 2.0 L solution of 10.0% v/v acetic acid, we need to understand what a percentage by volume means. A 10.0% v/v solution indicates that there are 10 milliliters of acetic acid in every 100 milliliters of the solution.

First, calculate the total volume of the desired solution in milliliters. Since there are 1000 milliliters in a liter, 2.0 L equals 2000 milliliters.

Next, to find out how much glacial acetic acid is required for a 10.0% v/v solution in 2000 mL, we can set up the following calculation:

[ \text{Volume of acetic acid} = \text{Total volume} \times \left(\frac{\text{Percentage}}{100}\right) ]

So, we need:

[ \text{Volume of acetic acid} = 2000 , \text{mL} \times \left(\frac{10}{100}\right) = 200.0 , \text{mL} ]