Final answer:
To prepare 25 mL of a 3% acetic acid solution, you need to calculate the amount of glacial acetic acid required. First, calculate the number of moles of acetic acid using the molar mass. Then, use the molarity of the solution to determine the volume of solution containing the calculated amount of acetic acid.
Step-by-step explanation:
To prepare 25 mL of a 3% acetic acid solution, you need to calculate the amount of glacial acetic acid required. First, calculate the number of moles of acetic acid using the molar mass. Since the density of acetic acid is greater than 1.00 g/mL, you can assume that 100 mL of the solution contains 3.78 g of acetic acid. From there, you can calculate the molarity of the solution by dividing the number of moles of acetic acid by the volume of the solution (25 mL).