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The equation for Kw based on this is likewise simplified.
In pure water, the concentrations of H+ and OH- produced by
the autoionization are equal because the ions are formed in
equal numbers. It’s been found that the concentrations have the
following values at 25 °C.
Therefore, at 25 °C,
As with other equilibrium constants, the value of Kw varies with
temperature (see Table 5). Unless stated otherwise we will deal
with systems at 25 °C.
One of the important properties of water is its ability to act as
an acid and base at the same time (amphoteric). The addition
of acid to water will make water act as an alkaline and with the
addition of base to water will make water act as acid. Why does
this happen? How does it affect the solubility of compounds?
Bahasa Inggris Kimia (PKIM3139) 30
