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21 April, 20:07

The pH of an acetic acid solution is 4.0. (10n = 1en).

calculate the [H+] moles/liters what is the [OH-? moles/liters

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  1. 21 April, 20:11
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    1. [H+] = 1 x 10^-4mol/L

    2. [OH-] = 1 x 10^-10mol/L

    Explanation:

    1. From the question given, the pH is 4.0. We can obtain the value of the value of the hydrogen ion concentration [H+] as follows:

    pH = - Log[H+]

    4 = - Log[H+]

    -4 = Log[H+]

    Anti-log of - 4

    [H+] = 1 x 10^-4mol/L

    2. Recall: [H+] x [OH-] = 1 x 10^-14

    But [H+] = 1 x 10^-4mol/L

    1 x 10^-4 x [OH-] = 1 x 10^-14

    Divide both side by 1 x 10^-4mol/L

    [OH-] = 1 x 10^-14/1 x 10^-4

    [OH-] = 1 x 10^-10mol/L
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