When chlorine (Cl2) gas is added to water during the disinfection of drinking water, it hydrolyzes with the water to form hypochlorous acid (HOCI). The disinfection power of the acid HOCI is 88 times better than its conjugate base, OCI". The pKa for HOCI is 7.5. Because the acidic form is a much better disinfectant, you want to maintain 89% of the total molar concentration in this form. What minimum pH should you target? Correct answer 6.6

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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When chlorine (Cl2) gas is added to water during the disinfection of drinking water, it
hydrolyzes with the water to form hypochlorous acid (HOCI). The disinfection power
of the acid HOCI is 88 times better than its conjugate base, OCI". The pKa for HOCI is
7.5. Because the acidic form is a much better disinfectant, you want to maintain 89%
of the total molar concentration in this form. What minimum pH should you target?
Correct answer 6.6
Transcribed Image Text:When chlorine (Cl2) gas is added to water during the disinfection of drinking water, it hydrolyzes with the water to form hypochlorous acid (HOCI). The disinfection power of the acid HOCI is 88 times better than its conjugate base, OCI". The pKa for HOCI is 7.5. Because the acidic form is a much better disinfectant, you want to maintain 89% of the total molar concentration in this form. What minimum pH should you target? Correct answer 6.6
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