If a solution has a pH greater than 7, the solution is

If a solution has a pH greater than 7, the solution is

• A. Base
• B. Acid
• C. Neutral
• D. Salt solution

Answer: (A)

pH measures how acidic or basic a solution is, with 7 being neutral at room temperature. A pH above 7 means the solution is basic (alkaline), because there are fewer hydrogen ions (H+) relative to hydroxide ions (OH−) in the solution. In basic solutions, OH− ions dominate, which is why the pH rises above 7. That’s why this is classified as a base. An acid would have a pH below 7, reflecting a higher H+ concentration. A neutral solution sits at about pH 7. A salt solution isn’t inherently defined by pH; it can be neutral, basic, or acidic depending on the specific salt and its hydrolysis, but the given condition directly indicates a basic solution. For context, examples of bases include sodium hydroxide or ammonia solutions, both with pH well above 7.

pH measures how acidic or basic a solution is, with 7 being neutral at room temperature. A pH above 7 means the solution is basic (alkaline), because there are fewer hydrogen ions (H+) relative to hydroxide ions (OH−) in the solution. In basic solutions, OH− ions dominate, which is why the pH rises above 7. That’s why this is classified as a base.

An acid would have a pH below 7, reflecting a higher H+ concentration. A neutral solution sits at about pH 7. A salt solution isn’t inherently defined by pH; it can be neutral, basic, or acidic depending on the specific salt and its hydrolysis, but the given condition directly indicates a basic solution. For context, examples of bases include sodium hydroxide or ammonia solutions, both with pH well above 7.