Anonymous
Anonymous asked in Science & MathematicsPhysics · 7 months ago

Can yall please help me with this physic question? What is the hydroxide ion concentration in an aqueous solution where the pH = 5?

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  • 7 months ago

    The following equation shows the relationship between the hydronium ion concentration and the hydroxide ion concentration.

    [H3O+1] * [OH-1] = 1 * 10^-14

    A solution with a pH of 5 has a hydronium ion concentration of 1 * 10^-5.

    1 * 10^-5 * [OH-1] = 1 * 10^-14

    [OH-1] = 1 * 10^-9

    The following equation shows the relationship between the pH of a solution and the hydronium ion concentration

    pH = -1 * log [H3O+1]

    5 = -1 * log [H3O+1]

    log [H3O+1] = -5

    The log is the power of 10. This means a solution with a pH of 5 has a hydronium ion concentration of 1 * 10^-5. I hope this is helpful for you.

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  • GTB
    Lv 7
    7 months ago

    pH + p)H = 14 so pOH = 14-pH; further pOH = - log [OH-] so [OH-] = 10^(-pOH) - 10^(14-pH) so if pH = 5, the [OH-] = 10^(14-5)

    understand the math and then plug in the values.

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    • electron1
      Lv 7
      7 months agoReport

      hydroxide ion concentration.

      [H3O+1] * [OH-1] = 1 * 10^-14

      A solution with a pH of 5 has a hydronium ion concentration of 1 * 10^-5.

      1 * 10^-5 * [OH-1] = 1 * 10^-14
      [OH-1] = 1 * 10^-9

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