What happen when Cl2 react with water?

What happen when Cl2 react with water?

When chlorine dissolves in water, it reacts to form the strong acid, HCl, and the weak but strongly oxidising acid, HOCl, which is responsible for the bleaching properties.

What are the stages of chlorination?

—prechlorination of raw water (i.e., prior to any treatment), —addition at various points in the treatment process, —addition after treatment but before distribution (i.e., final works disinfection), —addition during distribution, and.

Why is chlorine added to water?

Chlorination is the process of adding chlorine to drinking water to kill parasites, bacteria, and viruses. Using or drinking water with small amounts of chlorine does not cause harmful health effects and provides protection against waterborne disease outbreaks.

What is the chemical equation when chlorine reacts with water?

The chlorine mixed with water will produce hypochlorous acid (HOCl). The following equation presents the hydrolysis reaction (USEPA 1999; White 1992): Cl 2(g) + H 2 O ⇒ HO Cl + H + Cl − (2) The addition of chlorine gas to water reduces the pH of the water due to the production of hydrogen ion.

Why does chlorine react with water?

When chlorine gas (Cl2) is added to the water (H2O), it hydrolyzes rapidly to produce hypochlorous acid (HOCl) and the hypochlorous acid will then dissociate into hypochlorite ions (OCl-) and hydrogen ions (H+). Because hydrogen ions are produced, the water will become more acidic (the pH of the water will decrease).

What happens to chlorine in water?

Chlorine will react in water to form hypochlorous acid, which can then dissociate into hydrogen and hypochlorite ions, according to Eqn (1). This reaction is very important, as the disinfecting power of HOCl, hypochlorous acid, is about 40–80 times that of OCl−, hypochlorite.

How does chlorine oxidize?

Chlorine kills bacteria though a fairly simple chemical reaction. Both kill microorganisms and bacteria by attacking the lipids in the cell walls and destroying the enzymes and structures inside the cell, rendering them oxidized and harmless. The difference between HOCl and OCl- is the speed at which they oxidize.

How does chlorine react with H2O?

How is chlorine added to water?

Shock chlorination is performed by mixing a large amount of hypochlorite into the water. The hypochlorite can be in the form of a powder or a liquid such as chlorine bleach (solution of sodium hypochlorite or calcium hypochlorite in water).

Does chloride react with water?

Reactions with water: As an approximation, the simple ionic chlorides (sodium and magnesium chloride) just dissolve in water. Although other chlorides all react with water in a variety of ways described below for each individual chloride. The reaction with water is known as hydrolysis.

How does chlorine break down in water?

Chlorine is very unstable and reacts with a variety of chemicals and water when it is released into the environment. Chlorine is broken down by sunlight within a matter of several minutes. Chlorine dissolves in water and is converted into chloride and hypochlorous acid.