Phenol is used as a disinfectant. An aqueous solution of phenol was found to have a pH of 4.72. Calculate the [H₃O⁺] and [OH⁻] and pOH of the solution.

Answer 1

In order to convert a pH value to [H3O+], we take the antilog of the negative pH as follows:

1. 10^-4.72 = 0.000019 M

We can also find the pOH value by using the given pH value:

1. pH + pOH = 14
2. 14 - pH = pOH
3. pOH = 14 - 4.72 = 9.28

We can find [OH-] by using the pOH value and taking the antilog of it:

1. 10^-9.28 = 5.25 x 10^-10