Chemistry
Grade-10
Easy
Question
Chemical formula of washing soda is
- Na2CO3 . 7H2O
- Na2CO3 . 5H2O
- Na2CO3 . 2H2O
- Na2CO3 . 10H2O
Hint:
Inorganic hydrate of sodium carbonate.
The correct answer is: Na2CO3 . 10H2O
Washing soda is a chemical compound with the formula Na2CO3.10H2O. It is an inorganic hydrate of sodium carbonate.
Na2CO3 + 10H2O 
Na2CO3.10H2O
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