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  • Calculate pH: Hydroxide Concentration (1.0 x 10^-12 M) - Step-by-Step Guide
    Here's how to calculate the pH of a solution with a given hydroxide concentration:

    1. Understand the Relationship

    * pH and pOH: pH and pOH are related to each other through the following equation:

    pH + pOH = 14

    * Hydroxide (OH-) and pOH: pOH is the negative logarithm (base 10) of the hydroxide ion concentration:

    pOH = -log[OH-]

    2. Calculate the pOH

    * You're given [OH-] = 1.0 x 10^-12 M

    * pOH = -log(1.0 x 10^-12) = 12

    3. Calculate the pH

    * pH + pOH = 14

    * pH = 14 - pOH = 14 - 12 = 2

    Therefore, the pH of the solution is 2.

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