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28 March, 20:05

If the pH is 4.5, what is the pOH?

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  1. 28 March, 20:10
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    PH+pOH=14

    4.5+pOH=14

    pOH=14-4.5

    pOH = 9.5

    We know that

    [H⁺][OH⁻]=10⁻¹⁴, so

    -log ( [H⁺][OH⁻]) = - log10⁻¹⁴

    -log [H⁺] + ( - log[OH⁻]) = - log10⁻¹⁴,

    - log [H⁺] = pH

    - log[OH⁻] = pOH

    - log10⁻¹⁴ = - (-14) log10=14*1=14

    pH + pOH = 14
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