Which pH value indicates acidity?

Which pH value indicates acidity?

• A. pH > 7
• B. pH 14
• C. pH = 7
• D. pH < 7 indicates acidity

Answer: (D)

Acidity is indicated by a pH value below seven. The pH scale runs from 0 to 14, with seven being neutral. Values below seven mean the solution is acidic, and the lower the number, the stronger the acidity. So among the options, the pH value that corresponds to acidity is anything less than seven. Values greater than seven are basic (alkaline), and a pH of seven is neutral. A pH of 14 is extremely basic, not acidic.

Acidity is indicated by a pH value below seven. The pH scale runs from 0 to 14, with seven being neutral. Values below seven mean the solution is acidic, and the lower the number, the stronger the acidity. So among the options, the pH value that corresponds to acidity is anything less than seven. Values greater than seven are basic (alkaline), and a pH of seven is neutral. A pH of 14 is extremely basic, not acidic.