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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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buffyl13 buffyl13
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11 years ago
What is the hydrogen ion concentration of a solution of 8.06x10^-12 molar potassium hydroxide?
Work and/or explanation would be great!
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#1
11 years ago
Potassium hydroxide (KOH) contains 1 mole of hydrogen(H) per mole of KOH so that means in a solution of KOH at a concentration of 8.06x^-12 molar (M), the concentration of H will be the same (8.06x10^-12M or 8.06pM)
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#2
11 years ago
the concentration of KOH iv very small so OH from water is taken if consider so,

[OH] = [k] + [H ionized from water]

[OH] = 8.06x10^-12 + Kw/[OH]
[OH]^2 - [OH]8.06x10^-12 - 10^-14 = 0

------> [OH] = 1.00004 x 10^-7 M
---------> [H] = 0.99996 x 10^-7 M
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