What is the chemical name of washing soda?
Answer and explanation
Correct answer: Sodium carbonate decahydrate
Washing soda is sodium carbonate decahydrate, written as Na₂CO₃·10H₂O. The word decahydrate means that each formula unit of sodium carbonate is associated with ten molecules of crystallisation water. Therefore option A is correct. Sodium hydrogen carbonate is baking soda, calcium oxychloride is bleaching powder, and calcium sulphate hemihydrate is plaster of Paris.
Frequently asked questions
What is the correct answer to this question?
Sodium carbonate decahydrate
Why is this the correct answer?
Washing soda is sodium carbonate decahydrate, written as Na₂CO₃·10H₂O. The word decahydrate means that each formula unit of sodium carbonate is associated with ten molecules of crystallisation water. Therefore option A is correct. Sodium hydrogen carbonate is baking soda, calcium oxychloride is bleaching powder, and calcium sulphate hemihydrate is plaster of Paris.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
