When Cl2 gas is added to water during the disinfection of drinking water, it hydrolyzes with the water to form HOCl. The disinfe
ction power of the acid HOCl is 88 times better than its conjugate base, OCl-. The pKa for HOCl is 7.5. (a) What % of the total disinfection power (i.e., HOCl + OCl-) exists in the acid form at a pH = 6? (b) At pH = 7? (By "percentage of disinfection power" MZ means expressed as a percent.) Answer: 97% and 76%
