On the pH scale, numbers less than 7 indicate a(n):

On the pH scale, numbers less than 7 indicate a(n):

• A. Acidic solution
• B. Neutral solution
• C. Chemical solution
• D. Alkaline solution

Answer: (A)

On the pH scale, how acidic or basic a solution is depends on hydrogen ion concentration: the lower the number, the higher the H+ concentration, and the more acidic the solution. When the pH is below 7, the solution is acidic. A neutral solution sits at pH 7—not acidic or basic. An alkaline (basic) solution has a pH above 7, with more hydroxide ions than hydrogen ions. The term chemical solution doesn’t describe pH, so it isn’t a category like acidic or alkaline. So numbers under seven indicate an acidic solution.

On the pH scale, how acidic or basic a solution is depends on hydrogen ion concentration: the lower the number, the higher the H+ concentration, and the more acidic the solution. When the pH is below 7, the solution is acidic. A neutral solution sits at pH 7—not acidic or basic. An alkaline (basic) solution has a pH above 7, with more hydroxide ions than hydrogen ions. The term chemical solution doesn’t describe pH, so it isn’t a category like acidic or alkaline. So numbers under seven indicate an acidic solution.