Question

What volume of a 2.5 M stock solution of acetic acid (HC¿HÀO¿) is required to prepare 100.0 milliliters of a 0.50 M acetic acid solution?

Answer 1

M₁ x V₁ = M₂ x V₂

2.5 x V₁ = 0.50 x 100.0

2.5 x V₁= 50

V₁ = 50 / 2.5

V₁= 20 mL

hope this helps!