What is the pH of a solution with a pH of 7?

Rationale

Neutral solutions have a pH of 7.

A solution with a pH of 7 is considered neutral, indicating that the concentration of hydrogen ions (H⁺) is equal to that of hydroxide ions (OH⁻). This pH level is commonly associated with pure water at 25°C, where neither acidic nor basic properties dominate.

A (Acidic) YOUR ANSWER

An acidic solution has a pH less than 7, characterized by a higher concentration of hydrogen ions compared to hydroxide ions. Since the question specifies a pH of 7, it cannot be classified as acidic, as that would contradict the definition of acidity.

B (Basic) YOUR ANSWER

A basic solution, or alkaline solution, has a pH greater than 7, indicating a higher concentration of hydroxide ions relative to hydrogen ions. With a pH of 7, the solution does not exhibit basic properties and is therefore not basic.

C (Neutral) CORRECT

A pH of 7 is the defining characteristic of a neutral solution. In this state, the concentrations of hydrogen and hydroxide ions are equal, making it neither acidic nor basic. This classification is fundamental in understanding acid-base chemistry and the behavior of aqueous solutions.

D (Positive) YOUR ANSWER

The term "positive" does not accurately describe the pH scale, which ranges from 0 to 14. While a pH of 7 can be viewed as a positive value, it does not convey any chemical property of the solution. Thus, this option lacks relevance in the context of acidity or basicity.

Conclusion

The pH scale categorizes solutions based on their acidity or basicity, with a pH of 7 signifying neutrality. This means the solution has equal concentrations of H⁺ and OH⁻ ions. Acidic solutions fall below this threshold, while basic solutions rise above it. Understanding these classifications is crucial for studying chemical reactions and properties in aqueous environments.

What is the pH of a solution with a pH of 7?

Neutral solutions have a pH of 7.

Related Questions

Related Quizzes

How familiar were you with this question?

Report an Issue

Rate this Practice Test