Question
Question: The reaction of slaked lime with \(C{l_2}\) gas gives: A. Only \(CaOC{l_2}\) B. Only \(CaC{l_2...
The reaction of slaked lime with Cl2 gas gives:
A. Only CaOCl2
B. Only CaCl2
C. A mixture of Ca(OCl)2, Ca(OH)2, CaCl2 and H2O
D. quick lime
Solution
Slaked lime is referred to as Ca(OH)2. Calcium hydroxide which is an inorganic compound and has a colorless crystal or is a white powder and is produced when quicklime chemically known as calcium oxide is mixed with water. It is known to have many common names slaked lime, builder’s lime, etc.
Complete answer:
When Slaked lime Ca(OH)2 is reacted with chlorine gives bleaching powder Ca(OCl)2 is formed as a product, calcium chloride and water are produced as a by-product. The reaction for bleaching powder formation is as follows:
2Ca(OH)2+2Cl2→Ca(OCl)2+CaCl2+2H2O.
So, the correct answer is Option C.
Additional Information: Bleaching powder also known as Calcium hypochlorite is an inorganic compound which has a chemical formula of Ca(OCl)2 . And is one of the main Ingredients when it comes to commercial products such as bleaching powder or chlorine powder and is used for water treatment and as a bleaching agent even.
Calcium hypochlorite is also used as an oxidizing agent and thus finds some use in Organic chemistry, for example, it is used in cleaving glycols, α-hydroxycarboxylic acids, and keto acids which gives aldehydes or carboxylic acids as products. Calcium hypochlorite can also be used in the manufacturing of chloroform or also in the haloform reaction.
Note:
Calcium hypochlorite exists in two forms one is the dry calcium hypochlorite and the other is anhydrous hypochlorite, and instead of the above-mentioned products, the bleaching powder instead is a mixture of calcium hypochlorite Ca(OCl)2, dibasic calcium hypochlorite with chemical formula Ca3(OCl)2(OH)4 and dibasic calcium chloride with chemical formula Ca3Cl2(OH)4.