The chemical formula of washing soda is ______.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. Na2CO3 .10H2O.
Washing soda is sodium carbonate decahydrate. Its chemical formula is Na2CO3 .10H2O.
NaOH: Sodium hydroxide is called caustic soda.
Sodium bicarbonate is known as baking soda.