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Question

Which of the following compounds is consumed during the preparation of Na2CO3 by Solvay's process?

A
NH3 + CaCO3 + NaCl
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B
NH4Cl + CaO + NaCl
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C
CaCO3 + NaCl
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D
NaCl + NH4HCO3
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Solution

The correct option is C CaCO3 + NaCl
The overall reaction for the Solvay or Ammonia-soda process is:
2NaCl+CaCO3Na2CO3+CaCl2

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