− | In a situation of alkalosis the kidneys allow more HCO<sub>3</sub><sup>-</sup> to be excreted. This results in an increase in an increase of un-buffered H<sup>+</sup> and thus returns the pH towards normal. | + | In a situation of alkalosis the kidneys allow more HCO<sub>3</sub><sup>-</sup> to be excreted. This results in an increase of un-buffered H<sup>+</sup> and thus returns the pH towards normal. |