How do you prepare washing soda ? What are its uses ?

Explanation

1) Washing soda can be obtained from sodium chloride.
2) Baking soda is obtained from sodium chloride as follows.
`N/ACl+H_2O+CO_2+NH_3toNH_4Cl+N/AHCO_3`.
3) On heating, baking soda produces sodium carboN/Ate.
`N/AHCO_3overset("Heating")toN/A_2CO_3+H_2O+CO_2`
4) Recrystallization of sodium carboN/Ate gives washing soda. `N/A_2CO_3+10H_2OtoN/A_2CO_3*10H_2O`.
1) Washing soda (sodium carboN/Ate) is used in glass, soap and paper industries.
2) It is u sed in the manufacture of sodium compounds such as borax.
3) Sodium carboN/Ate can be used as a cleaning agent for domestic purposes.
4) It is used for removing permanent hardness of water.