what term is best described as the logarithmic measure of the concentration of hydronium ions in a solution

pH

Explanation:

We define the pH of a solution as the negative logarithm of hydronium ions concentration in solution.

Thus when we want to define pH mathematically, we write;

pH = - log {H3O^+]

Where;

{H3O^+] means the concentration of hydronium ions in solution.

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'