Question

Which of the following is TRUE regarding the pH of a solution?

A. The fewer hydroxyl ions in a solution, the more basic the solution is.
B. The fewer hydrogen ions in a solution, the more acidic the solution is.
C. The more hydroxyl ions in a solution, the more acidic the solution is.
D. The more hydrogen ions in a solution, the more acidic the solution is.

Answer 1

The true statement about the pH of a solution is that the more hydrogen ions present, the more acidic the solution is, which corresponds to a lower pH value.

Step-by-step explanation:

Regarding the pH of a solution, the following statement is TRUE: The more hydrogen ions in a solution, the more acidic the solution is. This corresponds to option D. This is because the pH scale measures the concentration of hydrogen ions (H+) in a solution, where a high concentration of hydrogen ions indicates a lower pH and a more acidic solution. In contrast, a solution with more hydroxyl ions (OH−) is more basic, and it will have a higher pH value. To summarize, acidic solutions have pH values less than 7 and contain higher concentrations of hydronium ions (H3O+), while basic solutions have pH values greater than 7 and contain higher concentrations of hydroxide ions (OH−).