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(C) Limestone is used as a raw material in the preparation of sodium carbonate by the Solvay process.The Solvay process produces sodium carbonate $(Na

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Limestone

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(C) Limestone is used as a raw material in the preparation of sodium carbonate by the Solvay process.The Solvay process produces sodium carbonate $(Na_2CO_3)$ using brine (as a source of sodium chloride,$NaCl$) and limestone (as a source of calcium carbonate,$CaCO_3$).The overall chemical reaction is:$2NaCl + CaCO_3 \rightarrow Na_2CO_3 + CaCl_2$

In the preparation of sodium carbonate,which of the following is used?

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