Question

adding select select to a solution will decrease the ph. select neutral ions hydrogen ions hydroxide ions buffered ions

Explanation:

To determine what decreases the pH of a solution, we recall the pH scale: \( \text{pH} = -\log_{10}[\text{H}^+] \). An increase in hydrogen ion (\( \text{H}^+ \)) concentration lowers the pH (makes the solution more acidic). Hydroxide ions (\( \text{OH}^- \)) increase pH (basic), neutral ions don’t affect pH, and buffered ions resist pH changes. So adding hydrogen ions decreases pH.

Answer:

hydrogen ions