(a) Washing soda: Chemical formula of washing soda is . Washing soda used as a cleansing agent in domestic household purposes.
Baking Soda: Chemical formula of baking soda is NaHCO3. Baking soda is used as an antacid to remove acidity in the stomach.
(b) The chemical formula of bleaching powder is CaOCl2.
Bleaching powder is prepared by passing chlorine gas over dry calcium hydroxide.
Bleaching powder is used in paper factories for bleaching wood pulp, as bleaching powder is a strong oxidizing agent.