When Cl, gas is added to water during the disinfection of drinking water, it hydrolyzes with the water to form HOCI. The HOCI will dissociate to H and OCt at low pH: Cha + H,0 → HOCI + HCI HOCI > H* + OCt (K, = 1075) Assume that the disinfection power of hypochlorous acid, HOCI, is 88 times greater than the conjugate base, OCI. The pka for HOCI is 7.5. a. What percentage of the total disinfection power measured as free chlorine (HOCI + OCt) exists in the more powerful acid form at pH = 6? Tip: the Environmental Chemistry cheat sheet and acid-base notes might be useful. b. At pH = 7? c. What could the treatment plant do to the water in order to add less Cl, gas but maintain a high level of disinfection?

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Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red. 

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.