Construction Health and Safety Technician (CHST) 2025 – 400 Free Practice Questions to Pass the Exam

A strong acid typically has a pH around 1, which indicates a high concentration of hydrogen ions (H⁺) in the solution, leading to the acidic properties. A pH of 1 is characteristic of strong acids such as hydrochloric acid (HCl) and sulfuric acid (H₂SO₄), which are highly dissociative in water. This level of acidity can cause corrosive effects and can significantly impact safety in a construction environment, making it crucial for health and safety technicians to be familiar with pH levels.

On the other hand, a strong base typically has a pH around 14. This high pH also signifies a high concentration of hydroxide ions (OH⁻) in the solution, which is associated with bases like sodium hydroxide (NaOH) and potassium hydroxide (KOH). The alkaline properties of strong bases can also lead to hazardous situations if proper safety precautions are not adhered to.

The range of pH from 0 to 14 is essential for understanding the chemical nature of various substances and their potential effects on health and safety in construction settings. Recognizing this range aids in effectively managing risks associated with acids and bases. The other options do not accurately represent the pH values