Question

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

`100mL=0,1L\\\\ 2,5(mol)/(L)*V_(c)=0,5(mol)/(L)*0,1L\\\\ V_(c)=(0,5(mol)/(L)*0,1L)/(2,5(mol)/(L))=0,02L=20mL`