Question: what is the mathematical relationship between ph and hydronium ion concentration?
Answer: pH = - log [H3O+]. The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH. [H3O+] = 10-pH or [H3O+] = antilog (- pH) Example: What is the hydronium ion concentration in a solution that has a pH of 8.34?