Which of the following is the strongest acid? a.pH = 12 b.pOH = 5 c.[H+] = 1 x 10-8 d.pOH = 12

Question

Which of the following is the strongest acid?
a.pH = 12
b.pOH = 5
c.[H+] = 1 x 10-8
d.pOH = 12

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niczorrrr 5 years 2021-07-24T03:23:28+00:00 1 Answers 20 views 0

Answers ( )

  1. Maris
    0
    2021-07-24T03:24:48+00:00
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    Answer:

    d. pOH = 12 => pH = 14 – 10 = 2 => most acidic

    Explanation:

    pH = -log[H⁺] => [H⁺] = 10^-pH

    By definition, if …

    [H⁺] > 10⁻⁷ > [OH⁻] => pH < -log(10⁻⁷) < 7 => pOH > 14 – 7 > 7 => acidic solution

    [H⁺] = 10⁻⁷ = [OH⁻]  => pH = -log(10⁻⁷) = 7 => pOH = 14 – 7 = 7 => neutral solution

    [H⁺] < 10⁻⁷ < [OH⁻]  => pH > -log(10⁻⁷) > 7 => pOH < 14 – 7 < 7 => basic solution

    ∴ From most basic to most acidic …

    a. pH = 12 => most basic

    b. pOH = 5 => pH = 14 – 5 = 9

    c. [H⁺] = 1 x 10⁻⁸ => pH = -log(10⁻⁸) = -(-8) = 8

    d. pOH = 12 => pH = 14 – 10 = 2 => most acidic

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