Is a ph = 7.25 solution acidic, basic, or neutral at 0 °c?

Answer is: solution is acidic, because pH value is less than 7,46.

The Kw (the ionic product for water) at 0°C is 0,12·10⁻¹⁴ mol²/dm⁶.

Kw = [H⁺] · [OH⁻ ].

[H⁺] = [OH⁻] = √0,12·10⁻¹⁴ mol²/dm⁶.

[H⁺] = [OH⁻] = 3,5·10⁻⁸ mol/L.

pH = - log[H⁺].

pH = - log (3,5·10⁻⁸ mol/L).

pH = 7,46; neutral solution on 0°C.