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    Got a calculations exam tomorrow and getting worked up cause I can't answer this question. Will rep for how to do the working...


    "1mL of a potassium permanganate solution is diluted to 100mls. The final solution has the concentration of 100ppm. Calculate the percentage strength (%w/v) of the original solution"


    Any idea?

    Cheers
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    (Original post by Gary10k)
    Got a calculations exam tomorrow and getting worked up cause I can't answer this question. Will rep for how to do the working...


    "1mL of a potassium permanganate solution is diluted to 100mls. The final solution has the concentration of 100ppm. Calculate the percentage strength (%w/v) of the original solution"


    Any idea?

    Cheers
    Left it a little late?

    If you dilute something by a factor of 1 to 100 then the concentration decreases by the same factor...

    So if the final solution has a 'strength' of 100ppm, the original had a 'strength' of 100 x 100ppm
 
 
 
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