Chemistryhard · Past Paper
What is the molecular formula of washing soda crystals?
A$Na_2CO_3.H_2O$
B$Na_2CO_3.10H_2O$
C$NaHCO_3$
D$NaOH$
✓ Correct Answer: B — $Na_2CO_3.10H_2O$
Washing soda is sodium carbonate decahydrate.
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