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20 February, 04:42

Based on the entries in the following table, which element is most commonly bonded to the acidic hydrogen? table some weak acids in water at 25 ∘c

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  1. 20 February, 07:26
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    The Correct is C₆H₅O⁻ : It is the most commonly bonded to the acidic hydrogen, and O2 is the most element bonded to the acidic hydrogen.

    The explanation:

    According to the table below we can see that the Ka (the acid dissociation constant) for the Phenol is the smallest one.

    when the Ka expression for this chemical reaction:

    C₆H₅OH (aq) ⇄ C₆H₅O⁻ (aq) + H⁺ (aq)

    is

    Ka = [C₆H₅O⁻] · [H⁺] / [C₆H₅OH]

    So, the water solution of the phenol has a very low equilibrium concentration of H ions [H+], So C₆H₅O⁻ is the element which most commonly bonded to the acidic hydrogen.
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