Question

Consider the following substances:

NaCl, Ca(OH)₂, NaHCO₃, NH₃, Na₂CO₃, H₂O, Cl₂, CO₂, CaSO₄.2H₂O, 2CaSO₄.H₂O, CaOCl₂

1. Which two substances combine to form bleaching powder?
2. Which four substances are utilised in the production of washing soda?
3. Which compound represents plaster of Paris?
4. Which compound is a part of baking powder?
5. Which compound is used as an antacid?

Answer 1

1. Two substances that combine to form bleaching powder are Ca(OH)₂ and Cl₂.
2. Four substances which are utilised in the production of washing soda are NaCl, NH₃, H₂O and CO₂.
3. The compound that represents plaster of Paris is 2CaSO₄.H₂O.
4. The component which is a part of baking powder is NaHCO₃.
5. The compound that is used as an antacid is NaHCO₃.