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What volume of a 0.100MHCl0.100MHCl stock solution should be used to prepare 250.00mL250.00mL of 0.0250MHCl0.0250MHCl?​

Respuesta :

nkirotedoreen46

Answer:

62.5 mL

Explanation:

We are given;

  • Molarity of the stock solution as 0.100 M
  • Volume of the dilute solution as 250 mL
  • Molarity of dilute solution as 0.0250 M

We are required to calculate the Volume of the stalk solution.

  • Taking the volume and molarity of the stock solution to be V₁ and M₁ respectively, and volume and molarity of the dilute solution to be V₂ and M₂ respectively.

We are going to use the dilution formula;

  • According to the dilution formula, M₁V₁ = M₂V₂
  • Rearranging the formula;

V₁ = M₂V₂ ÷ M₁

    = (0.025 M × 0.25 L) ÷ 0.100 M

    = 0.0625 L

But, 1 L = 1000 mL

V₁ = 62.5 mL

Therefore, the volume of the stock solution is 62.5 mL

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