What is the neutral pH value?

• A. 8
• B. 7
• C. 0
• D. 6

Answer: (B)

Neutral pH means the solution isn’t acidic or basic; it has equal amounts of hydrogen ions and hydroxide ions. In pure water at room temperature, these ion concentrations are both 1.0 × 10⁻⁷ M, so pH = -log10(1.0 × 10⁻⁷) = 7. That balance makes the solution neutral. Values below 7 are acidic (more H⁺), while values above 7 are basic (more OH⁻). So 7 is the neutral point; 6 is slightly acidic, 8 is slightly basic, and 0 would be extremely acidic.