NEETChemistryHydrogen
What happens to the calcium and magnesium ions in hard water when they react with washing soda?
Options
- AThey become more soluble.
- BThey remain unchanged.
- CThey form a complex with washing soda.
- DThey form insoluble carbonates.
Correct answer
D. They form insoluble carbonates.
Step-by-step solution
When calcium and magnesium ions in hard water react with washing soda, they form insoluble carbonates, which can be precipitated and removed.