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6_ Water is frequently disinfected with chlorine gas, forming hypochlorous acid (HOCL) which partially ionizes to hypochlorite and hydrogen ions as follows: HOCI H+ + OCl : Ka = 2.9x 10-8 The amount of [HOCl], which is a better disinfectant, depends 0n the pH: Find the hypochlorous fraction at pH 5, 9,and 11. What pH is the best for having highest disinfection (according to you)?'