Question

a solution has a ph of 2.4. what happens to the solution if the hydronium ion concentration is increased? the ph decreases. the solution becomes basic. the solution is neutralized. the ph becomes 7.0.

Explanation:

The pH is defined as $pH = -\log[H_3O^+]$. When the hydronium - ion concentration $[H_3O^+]$ increases, the negative logarithm of this concentration (the pH) decreases. A lower pH indicates a more acidic solution. A solution is basic when pH > 7, neutral when pH = 7. Since the initial pH is 2.4 (acidic) and increasing $[H_3O^+]$ makes it more acidic, it won't become basic, neutralized, or have a pH of 7.

Answer:

The pH decreases.