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5 December, 11:22

A bottle of antiseptic hydrogen peroxide (H2O2) is labeled 3.0% (v/v). How many mL H2O2 are in a 400.0 mL bottle of this solution?

Use this formula: Percent by volume: volume of solute/volume of solution*100%

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  1. 5 December, 12:36
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    = 12 mL H202

    Explanation:

    Given that, the concentration of H2O2 is given antiseptic = 3.0 % v/v

    It implies that, 3ml H2O2 is present in 100 ml of solution.

    Therefore, to calculate the amount of H202 in 400.0 mL bottle of solution;

    we have;

    (3.0 mL / 100 mL) * 400 mL

    = 12 mL H202
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