Question
Fri August 05, 2011 By:

which is the real bleaching agent in bleaching powder?Is it chlorine,oxygen or calcium.

Expert Reply
Fri August 05, 2011
Bleaching Powder is made by the action of chlorine gas on calcium hydroxide, the reaction being essentially:
     2Ca(OH)2 +2Cl2--->Ca(OCl)2+CaCl2+2H2O
The real bleaching agent in bleaching powder is chlorine which is available for oxidation.
bleaching powder contains 15-25% of calcium hydroxide and about only 35 % of chlorine is available for oxidation.
Ask the Expert