Question

Pure water is neutral in pH because:

a)The concentration of oxygen and hydrogen are equal
b)Hydrogen bonding reduces the formation of hydrogen ions
c)The concentration of hydroxide ions and hydrogen ions are equal
d)Ionization does not occur

Answer 1

Pure water has a neutral pH because it contains equal concentrations of hydrogen ions (H+) and hydroxide ions (OH-), which results in a pH value of 7. The correct option is C.

Step-by-step explanation:

Pure water is neutral in pH because the concentration of hydroxide ions and hydrogen ions are equal. This neutrality is represented by a pH of 7, which is the point of neutrality on the pH scale. When water ionizes, it dissociates into equal numbers of hydrogen (H+) ions and hydroxide (OH-) ions.

This state of balance means there's neither an acidic nor basic predominance, and the pH remains at 7, indicating neutrality. Additionally, the product of these two ion concentrations in pure water is always 1.0 × 10-14.