Which value on the pH scale indicates a strong base?

Which value on the pH scale indicates a strong base?

• A. 5
• B. 7.1
• C. 9
• D. 6.5

Answer: (C)

A value of 9 on the pH scale indicates a strong base because the pH scale ranges from 0 to 14, with lower values signifying increasing acidity and higher values indicating increasing alkalinity or basicity. A pH of 7 is considered neutral, meaning that it is neither acidic nor basic. Values above 7 represent alkaline (basic) substances, and a pH of 9 indicates that a solution has a significant concentration of hydroxide ions, which corresponds to a strong base. This understanding of the pH scale is essential for managing hazardous materials, as the pH can significantly influence the behavior and risks associated with different substances.

A value of 9 on the pH scale indicates a strong base because the pH scale ranges from 0 to 14, with lower values signifying increasing acidity and higher values indicating increasing alkalinity or basicity. A pH of 7 is considered neutral, meaning that it is neither acidic nor basic. Values above 7 represent alkaline (basic) substances, and a pH of 9 indicates that a solution has a significant concentration of hydroxide ions, which corresponds to a strong base. This understanding of the pH scale is essential for managing hazardous materials, as the pH can significantly influence the behavior and risks associated with different substances.