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21 June, 01:38

Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake? Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake? 4% 10-4 M 10-10 M 104 M 4.0 M

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  1. 21 June, 01:41
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    10⁻⁴ M is the hydrogen ion concentration of the lake.

    Explanation:

    pH is defined as the negative logarithm of the concentration of hydrogen ions.

    Thus,

    pH = - log [H⁺]

    pH scale generally runs from 1 to 14 where pH = 7 represents neutral medium, pH 7 represents basic medium.

    Given that, pH = 4.0

    So,

    4.0 = - log [H⁺]

    OR,

    [H⁺] = antilog (-4) = 10⁻⁴ M

    10⁻⁴ M is the hydrogen ion concentration of the lake.
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