1.

Write the chemical formula for washing soda. How may it be obtained from baking soda ? Name an industrial use of washing soda other than washing clothes.

Answer»

SOLUTION :`Na_2CO_3 . 10H_2O`
BAKING soda `(NaHCO_3)` on HEATING produces SODIUM carbonate `(Na_2CO_3)` which on recrystallisation produces washing soda
`2NaHCO_3 overset(Delta)to Na_2CO_3 + H_2O + CO_2 uarr`
`Na_2CO_3 + 10H_2O overset("Crystallisation")to Na_2CO_3 . 10H_2O`
Washing soda is used in the MANUFACTURE of glass.


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