Question

? Answer the question below. Type your response in the space provided. What volume of a 2.5 M stock solution of acetic acid (HC2H3O2) is required to prepare 100.0 milliliters of a 0.50 M acetic acid solution? Use the equation Mconcentrated*Vconcentrated = Mdilute*Vdilute.

Answer 1

Data:

`M_(concentrated) = 2.5\:mol`

`V_(concentrated) = ?`

`M_(dilute) = 0.50\:mol`

`V_(dilute) = 100\:mL\to0.100\:L`

Formula: Dilution Calculations


`M_(concentrated) * V_(concentrated) = M_(dilute) * V_(dilute)`

Solving:



`M_(concentrated) * V_(concentrated) = M_(dilute) * V_(dilute)`

`2.5 * V_(concentrated) = 0.50 * 0.100`

`2.5V_(concentrated) = 0.05`

`V_(concentrated) = (0.05)/(2.5)`

`\boxed{\boxed{V_(concentrated) = 0.02\:L\:or\:20\:mL}} \end{array}}\qquad\quad\checkmark`