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Bleaching power is a mixture of Calcium Hypochlorite(Ca(ClO)2), Calcium Chloride(CaCl2) and Ca(OH)2. Adding water containing CO2 forms HClO:

Ca(ClO)2 (s) + H2CO3 (aq) --> 2 HClO (aq) + CaCO3 (s)

With sunlight, HClO can decompose releasing nascent oxygen and forming HCl:

HClO (aq) --uv rays--> 0 (g) + HCl (aq)

It is well known that Chlorine (Cl2) in water is in equilibrium with Hydrochloric (HCl) and Hydrochlorous (HClO) acids with the side of the equation representing the current state affected by pH, temperature and the respective concentration of the reactants:

HCl (aq) + HClO (aq) <---> Cl2 (g) + H2O (l)

Increasing HCl ( per the UV ray decomposition reaction) in the presence of HClO, will drive the reaction above to the right producing Cl2.

It is also possible in the case of solid bleaching powder exposed to moist air containing CO2, that HClO will be produced. However, the evaporation of the HClO may release the Hypochlorous acid gaseous anyhydride, namely DiChlorine Mono-oxide, Cl2O which has a pungent smell similar to Cl2. Another possible path way for Cl2O formation is by the action of any Cl2 produced acting on the moist CaCO3, which was formed by the action of CO2 on either Ca(OH)2 or Ca(OCl)2:

2 Cl2(g) + CaCO3 (s) --> CaCl2 (s) + CO2 (g) + Cl2O (g)

Noted, if one passes Cl2 through a fresh precipitate of CaCO3 in solution, instead of Cl2O, one produces HClO (this is one cited method for the preparation of HClO). To be complete, there is also a cited reaction between CaCl2 and Cl2O, that produces Ca(OCl)2 and Chlorine gas (Cl2):

2 Cl2O(g) + CaCl2 (s) --> Ca(OCl)2 (s) + 2 Cl2 (g)

Note, this path producing Chlorine is true for Ca, Sr and Li, but not apparently for Sodium (Na) where a different path is followed. This also implies that by adding moisture, one can replace Cl2O with HClO and liberate Cl2. Note the following reaction from http://en.wikipedia.org/wiki/Calcium_hypochlorite

2 Ca(ClO)2 + 2 CO2 → 2 CaCO3 + 2 Cl2 + O2

which also claims the production of Chlorine by the action of CO2 on the Calcium salt, which is not observed when ones adds CO2 to NaClO.

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What reaction occurs when mixing calcium hypochlorite with water?

The reaction is as follows: Ca(OCl)2 + H2CO3 (carbonic acid in water) = CaCO3 + 2HOCL (hypochlorous acid) 2HOCL + organic matter = 2HCL + O2 (nascent or released oxygen) 2HCL + CaCO3 = CaCl2 + H20 + CO2 It is the nascent oxygen that actually carries out the oxidation / disinfection process.


How do you make calcium hypochlorite into a 5 percent bleach solution?

To make a 5% bleach solution from calcium hypochlorite, you would need to dissolve the appropriate amount of calcium hypochlorite in water. For example, to make 1 liter of 5% bleach solution, you would need to dissolve 50 grams of calcium hypochlorite in water. It's important to carefully measure and follow all safety precautions when handling and diluting the chemical.


What happens when chlorine gas is passed through calcium hydroxide?

When chlorine gas is passed through calcium hydroxide, it reacts to form calcium hypochlorite, calcium chloride, and water. The chemical equation for this reaction is: 2Ca(OH)2 + 2Cl2 → Ca(ClO)2 + CaCl2 + 2H2O. This is a common method used to produce calcium hypochlorite, which is commonly used as a bleaching agent and disinfectant.


What is the name of Ca (Clo)2?

Ca(ClO)2 is the chemical formula of calcium hypochlorite.


What would happen if liquid hypochloric acid were poured on calcium hypochlorite?

If liquid hypochloric acid is poured on calcium hypochlorite, a chemical reaction would occur, resulting in the production of chlorine gas. The reaction is highly exothermic and can be violent. It is important to handle these chemicals with care and avoid mixing them together.

Related Questions

What is reaction of calcium hypochlorite and sodium bicarbonate?

When calcium hypochlorite and sodium bicarbonate react, they produce calcium carbonate, sodium chloride, and water. This reaction is commonly used in swimming pool chlorination systems to release chlorine gas for disinfection purposes.


What will happen when dry slaked lime react with chlorine?

When dry slaked lime reacts with chlorine gas, it forms calcium chloride, calcium hypochlorite, and water. This reaction is commonly used in water treatment processes to disinfect and purify water, as calcium hypochlorite is a powerful disinfectant.


What is the chemical formula for calcium hypochlorite and sodium bi-sulfate reaction in water?

Calcium hypochlorite + Water &lt;=&gt; Calcium Hydroxide + Hypochlorous acid Ca(ClO)2 + H2O &lt;=&gt; Ca(OH)2 + HClO Sodium bisulfate + Water &lt;=&gt; Hydronium ion + Sodium sulfate + Sulfate ion NaHSO4 + H2O &lt;=&gt; H3O+ + Na2SO4 + SO4-2


What happens between NaClO and CaCo3 in a chemical reaction?

When sodium hypochlorite (NaClO) reacts with calcium carbonate (CaCO3), it produces calcium hypochlorite (Ca(ClO)2) and releases sodium carbonate (Na2CO3) as a byproduct. This reaction is characterized by the displacement of carbonate ions in calcium carbonate by hypochlorite ions from sodium hypochlorite.


What happens when chlorine gas is passed over calcium hydroxide?

They will undergo an acid base reaction and the products would be calcium chloride, calcium chlorate and water.


Is calcium hypochlorite soluble?

It has very less water solubility


Calcium hypochlorite chemical equation?

The chemical formula for calcium hypochlorite is Ca(ClO)2. When calcium hypochlorite reacts with water, it forms calcium hydroxide (Ca(OH)2) and hypochlorous acid (HOCl). The reaction can be represented as: Ca(ClO)2 + 2H2O -&gt; Ca(OH)2 + 2HOCl


What reaction occurs when mixing calcium hypochlorite with water?

The reaction is as follows: Ca(OCl)2 + H2CO3 (carbonic acid in water) = CaCO3 + 2HOCL (hypochlorous acid) 2HOCL + organic matter = 2HCL + O2 (nascent or released oxygen) 2HCL + CaCO3 = CaCl2 + H20 + CO2 It is the nascent oxygen that actually carries out the oxidation / disinfection process.


What is the reaction of sodium hypochlorite and sodium bisulfite?

The reaction between sodium hypochlorite and sodium bisulfite produces sodium chloride, water, and sulfur dioxide gas. This reaction is commonly used to neutralize the bleaching effects of sodium hypochlorite in water treatment processes.


What reaction occurs when mixing calcium hypochlorite with nitric acid?

When calcium hypochlorite is mixed with nitric acid, chloric acid is formed. This reaction may release chlorine gas, which is toxic and can be dangerous if inhaled. Therefore, it is important to carry out this reaction in a well-ventilated area and with proper safety precautions.


What is CaClO2 in chemistry?

CaClO2 is the chemical formula for calcium chlorite, a compound made up of calcium, chlorine, and oxygen. It is commonly used as a bleaching agent and for water treatment due to its oxidative properties.


What is vat rate of calcium hypochlorite in maharashtra?

what is vat rate of calcium hypochlorite in maharashtra