Chemistry · General Introduction: Electronic configuration and general trends in physical and chemical properties of elements across the periods and down the groups
Bleaching powder is obtained by the interaction of with:
Bleaching powder is obtained by the interaction of \( C l_{2} \) with:
- A. dilute solution of \( C a(O H)_{2} \)
- B. concentrated solution of \( C a(O H)_{2} \)
- C. dry Cao
- D. dry slaked lime
Step-by-step solution
Bleaching powder (calcium hypochlorite, Ca(OCl)2) is industrially prepared by reacting chlorine gas with dry slaked lime (Ca(OH)2). The reaction is: 2Cl2 + 2Ca(OH)2 → Ca(OCl)2 + CaCl2 + 2H2O. Using dry slaked lime ensures the formation of the desired product; dilute or concentrated solutions are not used in this process, and dry CaO (quicklime) does not yield bleaching powder.
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