Q

Washing soda is represented by Na2CO3.xH2O. The value of 'x' is equal to:

JE CBT-1, 18-Dec-24 S-2 2024
✓ Answer: B 10
Washing soda is chemically known as sodium carbonate decahydrate, represented as Na2CO3·10H2O. The compound contains 10 water molecules of crystallization, hence the value of 'x' is 10. It is commonly used in cleaning products and as a water softener. The presence of water of crystallization in washing soda makes it efflorescent, meaning it can lose water molecules when exposed to air.
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