Question

A compound which is formed due to recrystallization of sodium carbonate. Identify the compound and write its formula.

Answer 1

Hey mate !!

Thanks for the question !!

Here's the answer !!

We know that the Water of Crystallisation required by sodium carbonate to form another compound is 10 molecules.

Hence the compound that is formed will be having Na₂CO₃ .10 H₂O.

The above compound formed is called as the washing soda or sodium
bi - carbonate.

Uses of washing soda.

1. It is used for removing permanent hardness of water.

2. It is used in preparing borax glass.

3. It is used in many metallurgical and laundry based industries.

Hope my answer helps !!

Cheers !! 

Answer 2

Recrystallization of sodium carbonate gives washing soda