Q.why bleaching powder is used for disinfecting drinking water ? explain with the help an equation.
2CaOCl2 + H2O + CO2 → CaCO3 + CaCl2 + 2HClO
HClO → HCl + [O]
2HCl + [O] → H2O + Cl2.
This liberated chlorine acts as disinfectant, which kills harmful organism in water.