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

Question

Chemistry

Gunnar Reid

8 February, 15:27

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

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Answers (1)

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Timber · Answer 1

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.