s-Block ElementsHard

Question

In the manufacturing of sodium carbonate (Na2CO3), using Solvay process, which of the following compound is used ?

Options

A.Lime stone
B.Sodium hydroxide
C.Sodium chloride
D.(A) and (C) both

Solution

(A) CaCO3 gives CO2 and slaked lime.
CaCO3 CaO + CO2
CaO + H2O →  Ca(OH)2
(C) NH4HCO3 + NaCl →  NaHCO3 + NH4Cl
2 NaHCO3 Na2CO3 + CO2 + H2O

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