1.

How is washing soda prepared from sodium carbonate ? Give its chemical equation. State the type of this salt. Name the type of hardness of water which can be removed by it ?

Answer»

SOLUTION : • By recrystallisation of sodium carbonate.
`Na_2CO_3 + 10H_2Orarrunderset("WASHING SODA")(Na_2CO_3"."10H_2O)`
• It is a basic salt.
• Permanent hardness of WATER can be removed.


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