Which pH value is considered neutral?

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A pH value of 7 is considered neutral because it represents a balance between the concentrations of hydrogen ions (H⁺) and hydroxide ions (OH⁻) in a solution. In pure water at standard temperature and pressure, this balance results in a pH of 7, which neither exhibits acidity (pH less than 7) nor alkalinity (pH greater than 7). This benchmark is essential in various fields, including water treatment and septic systems, as it denotes a state where the solution does not adversely affect biological processes and is suitable for maintaining the health of aerobic bacteria involved in wastewater treatment.

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