A: When a solution of Sodium Hydrocarbonate (NaHCO3), also known as Baking Soda, is heated: Decomposition Reaction: 2NaHCO3 → Na2CO3 + H2O + CO2 What happens: Sodium Hydrocarbonate breaks down into: Sodium Carbonate (Na2CO3) Water (H2O) Carbon Dioxide (CO2) Observations: Effervescence (bubbling) due to CO2 release Formation of a solid precipitate (Na2CO3) Practical Applications: Baking: […]

A: The sodium compound commonly used for softening hard water is Sodium Carbonate (Na2CO3), also known as Washing Soda. Sodium Carbonate removes calcium and magnesium ions, which cause water hardness, through a process called precipitation: Ca2+ + Na2CO3 → CaCO3 (precipitate) + 2Na+ Mg2+ + Na2CO3 → MgCO3 (precipitate) + 2Na+ This reaction forms insoluble

A: The substance that yields bleaching powder (CaOCl2) when treated with chlorine is Calcium Hydroxide (Ca(OH)2). Chemical Reaction: Ca(OH)2 + Cl2 → CaOCl2 + H2O   This question belongs to the first chapter of the CBSE 10th Std Science book: Acids, Bases and Salts Buy the Book

A: The common name of the compound CaOCl₂ is Bleaching Powder. Bleaching Powder, also known as Calcium Hypochlorite, is widely used: As a disinfectant and sanitizer in water treatment and swimming pools. As a bleaching agent in laundry and textile industries. To kill bacteria, viruses, and other microorganisms. In households, Bleaching Powder is often used