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
2 answers:
According to picture below, C₆H₅O⁻ is most commonly bonded to the acidic hydrogen, because it has smallest Ka (<span>the acid dissociation constant).
Chemical reaction: C</span>₆H₅OH(aq) ⇄ C₆H₅O⁻(aq) + H⁺(aq).
Ka = [C₆H₅O⁻] · [H⁺] / [C₆H₅OH].
Equolibrium concentration of hydrogen ions is very low in water solution of phenol.
Chemical reaction: C</span>₆H₅OH(aq) ⇄ C₆H₅O⁻(aq) + H⁺(aq).
Ka = [C₆H₅O⁻] · [H⁺] / [C₆H₅OH].
Equolibrium concentration of hydrogen ions is very low in water solution of phenol.
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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