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Math Help - pH scale - with a special log

  1. #1
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    pH scale - with a special log

    The scale for acidity is defined by where is the concentration of hydrogen ions measured in moles per liter (M).

    A solution has a of 7.8.

    Calculate the concentration of hydrogen ions in moles per liter (M).

    The concentration of hydrogen ions is moles per liter

    -------------


    okay so here's what i did

    7.8 = -log10 (X)

    10^7.8 = -X

    seems like that's wrong though? any thoughts?
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  2. #2
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    Quote Originally Posted by badshahkhan View Post
    The scale for acidity is defined by where is the concentration of hydrogen ions measured in moles per liter (M).

    A solution has a of 7.8.

    Calculate the concentration of hydrogen ions in moles per liter (M).

    The concentration of hydrogen ions is moles per liter

    -------------


    okay so here's what i did

    7.8 = -log10 (X)

    10^7.8 = -X

    seems like that's wrong though? any thoughts?



    Hey here's what you need to do:

    -log10 (H+) = 7.8

    -7.8 = log 10 (H+)

    10^-7.8 = (H+)
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