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21 April, 02:39

What is the pH of a solution in which the [OH-] =

1x 10-5?

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Answers (1)
  1. 21 April, 03:33
    0
    the pH of the solution = 9

    Explanation:

    pH -

    The value of pH is used to determine the acidic strength of the solution, depending on the connection of the H⁺ ions in the solution.

    pH is given as negative log of the H⁺ concentration.

    Since,

    pH = - log [ H⁺ ]

    Similarly,

    pOH = - log [ OH⁻ ]

    The relation between pH and pOH is -

    pH + pOH = 14

    From the question,

    [OH⁻] = 1 * 10⁻⁵

    pOH = - log [ OH⁻ ]

    pOH = - log [ 1 * 10⁻⁵ ]

    pOH = 5

    Therefore,

    pH + pOH = 14

    pH + 5 = 14

    pH = 9

    Hence, the pH of the solution = 9
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