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12 February, 19:06

What is the ph of a solution with a hydroxyl ion (oh-) concentration of 10-10 m? what is the ph of a solution with a hydroxyl ion (oh-) concentration of 10-10 m? ph 10 ph 12 ph 4 ph 2?

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  1. 12 February, 19:25
    0
    PH is the potential of hydrogen.

    pH = - log₁₀ (H+)

    while, pOH = - log₁₀ (OH-)

    But; pH + pOH = 14

    Therefore; for a solution with a concentration of (OH-) of 10^-10

    The pOH = - log (10^-10)

    = 10

    Therefore pH = 14-10

    = 4
  2. 12 February, 19:30
    0
    According to this formula:

    pH = - log [H]

    And, pOH = - log [OH] >>> (1)

    Where, pH + pOH = 14 >>> (2)

    ∵ the hydroxide ion concentration = (OH-) = 10 ^ - 10 M

    from (1) and (2) and by substitution:

    ∴ pOH = - log [10^-10] = 10

    ∴ pH = 14 - 10 = 4
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