which of these statements best explains why pure water has a ph of 7? pure water contains only h2o…

which of these statements best explains why pure water has a ph of 7? pure water contains only h2o molecules, but ph is based on the concentration of h3o+ ions. each molecule of water can dissociate to form 7 h3o+ ions. water self - ionizes to form an equilibrium system that has h3o+=1.0×10−7 m. done

which of these statements best explains why pure water has a ph of 7? pure water contains only h2o molecules, but ph is based on the concentration of h3o+ ions. each molecule of water can dissociate to form 7 h3o+ ions. water self - ionizes to form an equilibrium system that has h3o+=1.0×10−7 m. done

Answer

Brief Explanations:

The pH of a solution is defined as -log[H₃O⁺]. In pure water, self - ionization occurs: 2H₂O ⇌ H₃O⁺ + OH⁻, and at 25°C, the equilibrium concentration of H₃O⁺ is 1.0×10⁻⁷ M. Using the pH formula, pH = -log(1.0×10⁻⁷) = 7.

Answer:

Water self-ionizes to form an equilibrium system that has [H₃O⁺]=1.0×10⁻⁷ M.