The ka value for acetic acid, ch3cooh(aq), is 1.8× 10–5 m. calculate the ph of a 2.00 m acetic acid solution.

Hello!

The dissociation reaction of Acetic Acid is the following:

CH₃COOH + H₂O ⇄ CH₃COO⁻ + H₃O⁺

The ka value is expressed as follows:



After the dissociation, we can clear for the concentration of H₃O⁺ (x) in the following way (Considering that x is small).



So, to finish, we apply the definition of pH



So the pH of this solution is 2,22

Have a nice day!

The reaction will shift to the right

Idon't know hope someone you