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 

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