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

Question

Marina CMI [18]

2 years ago

5

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

Chemistry

2 answers:

Studentka2010 [4] · Answer 1 · 2023-12-07T08:40:51+03:00

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.

saw5 [17] · Answer 2 · 2023-12-07T11:09:55+03:00

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.