In the manufacture of sodium carbonate, the following reactions are involved: (A)Δ−→(B)+CO2 (B)+H2O→(C)NH4Cl−−−−→(D) (E)+CO2→(F) (F)+NaCl→GHeat−−−→Na2CO3+CO2+H2O (D) is a gas which is soluble in H2O
Compound (B) is:
A
CaO
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B
Ca2O2
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C
CaO2
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D
Na2O
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Solution
The correct option is ACaO CaCO3Δ−→CaO+CO2 CaO+H2O→Ca(OH)2NH4Cl−−−−→NH3+CaCl2+CO2 NH4OH+CO2→NH4HCO3 NH4HCO3+NaCl→NaHCO3+NH4Cl NaHCO3Heat−−−→Na2CO3+CO2+H2O