Answer
is: 325.5 mL of the stock solution.
c₁(AgNO₃)
= 0.675 M.
V₂(AgNO₃) = 0.879 L.
c₂(AgNO₃) = 0.250 M.
V₁(AgNO₃) = ?
c₁ -
original concentration of the solution, before it gets diluted.
c₂
- final concentration of the solution, after dilution.
V₁
- volume to
be diluted.
V₂ - final volume after
dilution.
c₁ · V₁ = c₂
· V₂.
V₁(AgNO₃) = c₂ · V₂ ÷ c₁.
V₁(AgNO₃) = 0.250 M · 0.879 L ÷ 0.675 M.
V₁(AgNO₃) = 0.325 L · 1000 mL = 325 mL.
