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When Cl2 gas is added to water during disinfection ofwater, it hydrolyzes with water to form HOCl. The power of acidHOCl is 88 times better than its conjugate base, OCl- .The pKa for HOCl is 7.5
(a) What percentage of the total disinfection power (HOCl +OCl- ) exists in the acid form at pH = 6?
(b) At pH = 7
relevant reactions:
H2O + Cl2 <---> HOCl + HCl
HOCl <----> H+ + OCl-
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