Kaplan Nursing Entrance Exam Practice 2026 – Comprehensive Prep

The pH range of 11.2-12.0 corresponds to strong bases, which are substances that can significantly increase the concentration of hydroxide ions (OH-) in a solution. Strong bases are characterized by their ability to completely dissociate in water, resulting in a high pH.

At this pH level, the solution has a lower concentration of hydrogen ions (H+) compared to hydroxide ions, indicating a highly alkaline environment. This elevated pH is typical for strong bases such as sodium hydroxide (NaOH) or potassium hydroxide (KOH).

In contrast, other pH ranges represent weaker bases, neutral substances, or acidic environments. The range of 0.0-1.0 is highly acidic, indicating a strong presence of hydrogen ions. The range of 4.0-6.0 represents weakly acidic solutions. A pH of 7.0 represents neutrality, where concentrations of H+ and OH- are equal, which is typical for pure water. Lastly, the range of 7.0-10.0 might include weakly basic solutions but does not reach the levels that classify a substance as a strong base. Thus, the most accurate classification for strong bases falls within the