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27 June, 16:15

The student diluted 50.00 mL of commercial bleaching solution to 250 mL in a volumetric flask, and titrated a 20-mL aliquot of the diluted bleaching solution. The titration required 35.46 mL of 0.1052M Na2S2O3 solution. A faded price label on the gallon bottle read $0.79. The density of the bleaching solution was 1.10 g/mL

Determine the volume of commercial bleaching solution present in the diluted bleaching solution titrated

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  1. 27 June, 16:16
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    To get the volume of the original solution in the dilution, we consider the dilutions that were made:

    from 50 mL to 250 mL:

    1/5 of original was present

    from 20 mL of 250 mL:

    1/12.5 of the diluted mixture was presetn

    So, V=50 mL * (1/5) * (1/12.5) = 0.8 mL of original bleaching solution was present in dilution
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