Question

Why pure water has pH 7 at room temperature?​

Answer 1

Answer:

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In pure water near room temperature, the concentration of H+ is about 10-7 moles/liter, which gives a pH of 7.

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Answer 2

Explanation:

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Even in pure water ions tend to form due to random processes (producing some H+ and OH- ions). The amount of H+ that is made in pure water is about equal to a pH of 7. That's why 7 is neutral. ... In pure water near room temperature, the concentration of H+ is about 10-7 moles/liter, which gives a pH of 7.

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