Question

Washing soda has the formula:

• A. $Na _{2} CO _{3}-7 H _{2} O$
• B. $Na _{2} CO _{3}-10 H _{2} O$
• C. $Na _{2} CO _{3}- H _{2} O$
• D. $Na _{2} CO _{3}$

Answer 1

Answer: (B)

Sodium carbonate decahydrate is known as washing soda. Its chemical formula is $Na _{2} CO _{3} \cdot 10 H _{2} O$. It is a white crystalline solid with no smell.