Calculate the relative concentration of phenol (ka=1.05x10^10) and phenolate ion in a solution with 0.05M total phenol (pH=7.5)

Answer 1

I believe you've made a typo with Ka.
Call phenol just HP.
HP ==> H^+ + P^-
Ka = (H^+)(P^-)/(HP)
Convert pH to (H^+) and substitute that along with Ka value and solve for the ratio of HP/P

Answer 2

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