What is the pH range of a neutral aqueous solution at standard temperature (298 K)?

💡 Solution & Explanation

At standard temperature of 298 K, pure water dissociates to produce equal concentrations of hydrogen and hydroxide ions such that their product equals ten to the power of minus fourteen, yielding a neutral pH of exactly 7. Solutions with values below this threshold are acidic, whereas those above it are basic. Temperature variations can alter the self-ionization constant of water, shifting the neutral pH value slightly.