What is h3o in a solution of naoh whose concentration is 3.75

The H3O in a solution is 12.57.

Explanation:

The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH.

pOH = - log[H3O]

pOH = - log (3.75x10^-2)

= 1.43

Now, pH = 14 - 1.43

= 12.57

The H3O in a solution is 12.57.