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21 April, 10:21

The ph of a solution is 8.05 ± 0.02. "what is the concentration of h in the solution and its absolute error

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  1. 21 April, 14:04
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    pH is equivalent to the negative log of the concentration of H in molarity, that is:

    pH = - log [H]

    so the concentration is:

    8.05 = - log [H]

    [H] = 8.91 x 10^-9 M

    the absolute error is:

    8.07 = - log [H’]

    [H’] = 8.51 x 10^-9 M

    absolute error = 8.91 x 10^-9 M - 8.51 x 10^-9 M = 0.4 x 10^-9 M

    Therefore:

    8.91 x 10^-9 M ± 0.4 x 10^-9 M
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