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15 November, 02:58

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

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  1. 15 November, 03:19
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    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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