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30 September, 07:30

What is the new solution concentration when 150. mL of water is added to 200. mL of a 3.55 M HBr solutions.

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  1. 30 September, 07:31
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    The new concentration is 2.03M

    Explanation:

    Step 1: Data given

    A 200 mL 3.55 M HBr is diluted with 150 mL

    Step 2: The dilution

    In a dilution, the ratio that exists between the concentration of the stock solution and the concentration of the diluted solution equals the ratio that exists between the volume of the diluted solution and the volume of the stock solution.

    Dilution factor = [stock sample]/[diluted sample] = diluted volume / stock volume

    In this case, the volume of the stock solution is 200 mL

    Adding 150 mL of water to the stock solution will dilute it to a final volume of 200 + 150 = 350 mL

    The dilution factor wll be 350/200 = 1.75

    This makes the diluted concentration:

    3.55/1.75 = 2.03M

    The new concentration is 2.03M
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