On the pH scale, which values indicate acids, bases, and neutral solutions, and what color would universal indicator show for a strong acid?

On the pH scale, which values indicate acids, bases, and neutral solutions, and what color would universal indicator show for a strong acid?

• A. Acids pH < 7, bases pH > 7, neutral pH = 7; a strong acid would turn the universal indicator blue.
• B. Acids pH < 7, bases pH > 7, neutral pH = 7; a strong acid would turn the universal indicator green.
• C. Acids pH < 7, bases pH > 7, neutral pH = 7; a strong acid would turn the universal indicator yellow.
• D. Acids pH < 7, bases pH > 7, neutral pH = 7; a strong acid would turn the universal indicator red.

Answer: (D)