A solution with pH greater than 7 is called a what?

A solution with pH greater than 7 is called a what?

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

Answer: (C)

A solution with pH above 7 is basic (also called alkaline). The pH scale shows how acidic or basic a solution is: acids have pH below 7, neutral solutions are at pH 7, and bases push the pH above 7 by decreasing hydrogen ion concentration (or, equivalently, by increasing hydroxide ions) in water. So when a solution is more than 7, it’s behaving as a base. Examples include substances like sodium hydroxide or ammonia. A salt, formed from an acid and a base, can have a pH that’s acidic, neutral, or basic depending on the strengths of the starting acid and base, so it isn’t a default indicator of basicity.

A solution with pH above 7 is basic (also called alkaline). The pH scale shows how acidic or basic a solution is: acids have pH below 7, neutral solutions are at pH 7, and bases push the pH above 7 by decreasing hydrogen ion concentration (or, equivalently, by increasing hydroxide ions) in water. So when a solution is more than 7, it’s behaving as a base. Examples include substances like sodium hydroxide or ammonia. A salt, formed from an acid and a base, can have a pH that’s acidic, neutral, or basic depending on the strengths of the starting acid and base, so it isn’t a default indicator of basicity.