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Asked by srprusty | 09 Feb, 2010, 06:52: PM
answered-by-expert Expert Answer

Baking soda is Sodium hydrogen carbonate (NaHCO3)
Preparation:
NaCl + H2O + CO2+ NH3  NH4Cl + NaHCO3

Bleaching powder is represented as CaOCl2, though the actual composition is quite complex.
Preparation: Bleaching powder is produced by the action of chlorine on dry slaked lime.
Ca(OH)2 + Cl2  CaOCl2+ H2O

Washing soda is  Sodium carbonate Na2CO3 .10H2O
Preparation:
In the first step, sodium carbonate is obtained by heating baking soda.
2 NaHCO3Na2CO3 + H2O + CO2
                 Heat

Then washing soda is produced by recrystallisation of sodium carbonate
Na2CO3 + 10H2O  Na2CO3 .10H2O

Answered by | 10 Feb, 2010, 09:09: AM

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