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7 January, 10:09

You wish to make a 0.283 M hydrobromic acid solution from a stock solution of 12.0 M hydrobromic acid. How much concentrated acid must you add to obtain a total volume of 75.0 mL of the dilute solution

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  1. 7 January, 10:32
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    1.77 mL

    Explanation:

    To solve this problem we going to use the following equation:

    [1] X v1 = [2] X v2

    Where:

    [1] = will be the higher concentration, the stock solution.

    [ 2 ] = will be the concentration that you want to obtain.

    v1 = the volume you have to take from the stock solution

    v2 = the volume of the solution you will prepare

    Replacing the data on the equation:

    [1] = 12 M

    [2] = 0.283 M

    v1 = ?, that's the volume you want to find.

    v2 = 75 mL

    Using the equation:

    12 M x v1 = 0.283 M x 75 mL

    v1 = (0.283x75) / 12

    v1 = 1.77 mL
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