The reaction of carbon dioxide with lime water is a classic test for CO2. The initial formation of a white precipitate and its subsequent dissolution upon excess CO2 are due to the formation of calcium carbonate and then calcium bicarbonate, respectively.
CO2, when passed in excess, in lime water turns colourless again because of
Asked in moter vehicle inspector · Topic: Acid, Base and Salt (Common Salts: Baking Soda, Washing Soda, Plaster of Paris and Gypsum)
More Chemistry questions
- Chemical name of washing soda is
- The substance that hardens when mixed with water is
- Gypsum is obtained when :
- Which of the following is NOT an antacid?
- Iodised salt contains
- Calcium oxide reacts vigorously with water to produce slaked lime whose solution is used for white-washing walls. This slaked lime reacts with component (A) in air to form a thin layer of component (B) to give a shiny finish. What are the components (A) and (B) ?
- Brine is an aqueous solution of
- Which one of the following is NOT true for bleaching powder ?