Multiple choice general knowledge

Pure water (solely hydrogen and oxygen atoms) has a pH of -.

  1. 5

  2. 6

  3. 7

  4. 8
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pure water has a pH of 7 because it is neutral, meaning the concentration of hydrogen ions equals the concentration of hydroxide ions. The pH scale ranges from 0-14, with 7 being the neutral point. Pure water contains only H2O molecules with equal concentrations of H+ and OH- ions from autoionization.

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