Explain what happens to the ratio of the two common forms of free residua! chlorine as the pH of water changes and the significance of changes in the ratio of the two forms. (a) (i) The ionization constant for the ionization of hypochlorous acid to hypochlorite ion is found to be 2.5 x 10* at 20°C. If the water has a pH of 8.0, find the percentage of hypochlorous acid in the water. (ii)

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Explain what happens to the ratio of the two common forms of free
residual chlorine as the pH of water changes and the significance of
changes in the ratio of the two forms.
Q 4. (a)
(i)
(ii)
The ionization constant for the ionization of hypochlorous acid to
hypochlorite ion is found to be 2.5 x 10* at 20°C. If the water has a
pH of 8.0, find the percentage of hypochlorous acid in the water.
Transcribed Image Text:Explain what happens to the ratio of the two common forms of free residual chlorine as the pH of water changes and the significance of changes in the ratio of the two forms. Q 4. (a) (i) (ii) The ionization constant for the ionization of hypochlorous acid to hypochlorite ion is found to be 2.5 x 10* at 20°C. If the water has a pH of 8.0, find the percentage of hypochlorous acid in the water.
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