Calcium hypochlorite is the chemical name of Bleaching Powder, and its chemical formula is Ca(ClO)2. Ca(ClO)2 is called Calcium Oxychloride. Also Read: pKa in Chemistry : Definition Bleaching Powder Preparation The reaction of chlorine gas (produced from the chlor-alkali process) on dry slaked lime (Ca(OH)2). Ca(OH)2 + Cl2 → CaOCl2 + H2O gives Bleaching powder (CaOCl2) From the above reaction, we see there are two chlorine atoms out of which one is bonded to the calcium atoms and the other …