Washing soda, sodium carbonate decahydrate, efflorescent crystals used for washing. especially textiles. is a compound of __________.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. sodium.
- Washing soda, also known as sodium carbonate decahydrate (Na₂CO₃·10H₂O), is a compound of sodium (Na). Sodium carbonate decahydrate has the chemical formula Na₂CO₃·10H₂O.
- It is an efflorescent crystal, meaning it loses its water of crystallization when exposed to air and can change to anhydrous sodium carbonate (Na₂CO₃). It is commonly used in the cleaning of textiles, laundry, and in various industrial processes as a detergent, water softener, and alkalizing agent.