Which of the following reactions leads to the production of bleaching powder?
-
A.
CaCO3 + HCl → CaCl2 + CO2 + H2O
-
B.
Ca(OH)2 + Cl2 → CaOCl2 + H2O
-
C.
Ca(OH)2 + CO2 → CaCO3 + H2O
-
D.
CaO + H2O → Ca(OH)2
Correct Answer:
B. Ca(OH)2 + Cl2 → CaOCl2 + H2O
Explanation:
The correct answer is Option B: Ca(OH)2 + Cl2 → CaOCl2 + H2O.
Bleaching powder, chemically known as calcium oxychloride (CaOCl2), is manufactured through the reaction of chlorine gas with dry slaked lime, which is calcium hydroxide [Ca(OH)2]. In this chemical process, chlorine acts on the solid calcium hydroxide to produce the bleaching agent along with water as a byproduct. This specific reaction is fundamental in industrial chemistry for producing disinfectants and bleaching agents used in textiles and water treatment. Other reactions listed, such as the reaction of calcium carbonate with acid or the hydration of quicklime, do not result in the formation of calcium oxychloride.
Click below to open Discussion & Feedback
0 Issues
Please
login to comment or Report Issues.