Which part of the pH scale is neutral?

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Prepare for your College Biology Exam 1 with flashcards and multiple choice questions. Test your understanding with detailed explanations and hints to ensure success in your biology exam!

Multiple Choice

Which part of the pH scale is neutral?

Explanation:
Neutral pH is 7 on the pH scale. At this point, the concentrations of hydrogen ions and hydroxide ions are equal (in pure water at 25°C, [H+] = [OH−] = 1×10−7 M), so the solution is neither acidic nor basic. Values below 7 are acidic because they have more H+ than OH−, while values above 7 are basic because OH− exceeds H+. So 7 is the neutral point, with 0–6 acidic, 8–14 basic, and 0–14 covering all possible values.

Neutral pH is 7 on the pH scale. At this point, the concentrations of hydrogen ions and hydroxide ions are equal (in pure water at 25°C, [H+] = [OH−] = 1×10−7 M), so the solution is neither acidic nor basic. Values below 7 are acidic because they have more H+ than OH−, while values above 7 are basic because OH− exceeds H+. So 7 is the neutral point, with 0–6 acidic, 8–14 basic, and 0–14 covering all possible values.

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