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Question

When washing soda is heated :
  1. CO is released
  2. CO+CO2 is released
  3. CO2 is released
  4. water vapour is released

A
CO2 is released
B
CO is released
C
CO+CO2 is released
D
water vapour is released
Solution
Verified by Toppr

when washing soda was strongly heated, it loses all water of crystallization and become anhydrous sodium carbonate. The following reaction took place:
Na2CO3.10H2O9H2O−−−ΔNa2CO3.H2OH2O−−−ΔNa2CO3
Thus when washing soda is heated it loses water vapour.

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