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5 June, 00:42

What is the [OH⁻] (hydroxide concentration) of that same solution? (pH = 4.00)

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  1. 5 June, 00:49
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    Answer: 1 x 10^-10M

    Explanation:

    Given that,

    pOH of solution = ?

    pH of solution = 4.00

    Recall that pH is the negative logarithm of hydrogen ion concentration in the solution while pOH is the negative logarithm of hydroxide ion concentration in the solution.

    Hence, pH + pOH = 14

    4.00 + pOH = 14

    pOH = 14 - 4.00

    pOH = 10

    Apply the formula pOH = - log (OH-) to get [OH⁻]

    10 = - log (OH-)

    (OH-) = Antilog (-10)

    (OH-) = 1 x 10^-10M

    Thus, 1 x 10^-10M is the [OH⁻] (hydroxide concentration) of that same solution with pH value of 4.00
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