General Science • ChemistryEasy
What is the chemical formula of ordinary washing soda used in laundry and water softening?
A. Sodium bicarbonate
B. Sodium carbonate decahydrate✓ Correct Answer
C. Sodium chloride dihydrate
D. Sodium hydroxide monohydrate
💡 Solution & Explanation
Washing soda is chemically known as sodium carbonate decahydrate with the formula Na2CO3 dot 10H2O, widely utilized for softening hard water and in manufacturing glass and soap. Sodium bicarbonate is baking soda, which releases carbon dioxide when heated during baking. Sodium chloride is common table salt.
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