AP Chemistryeasymcq1 pt
What is the pH of pure water at 25 °C?
A.7.00
B.0
C.14
D.1.0 × 10⁻⁷
Explanation
Core Concept
Water autoionizes to give [H⁺] = [OH⁻] = 1.0 × 10⁻⁷ M, so pH = 7.00 at 25 °C. The value shifts with temperature.
Correct Answer
A7.00
More Unit 8: Acids and Bases practice questions
- mediumWhich mixture produces a buffer with pH closest to 9.0?
- mediumFor a weak acid, which approximation allows skipping the quadratic?
- mediumWhat is the pH of a solution after 0.0050 mol of HCl is added to 1.0 L of pure water?
- mediumIn the reaction HSO₄⁻ + H₂O ⇌ SO₄²⁻ + H₃O⁺, which species acts as a base?
- easyWhich of the following is the strongest base?
Practice more AP Chemistry questions with full explanations
Practice Unit 8: Acids and Bases Questions →