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Preparations and Uses of Sodium Carbonate

IN the Solvay...

Question

IN the Solvay process, can we obtain sodium carbonate directly by treating the solution containing $(N H_{4})_{2} C O_{3}$ with sodium chloride? Explain.

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Solution

No, it is not.

$(N H_{4})_{2} C O_{3}$ reacts with NaCl as

$(N H_{4})_{2} C O_{3} + 2 N a C l ⇌ N a_{2} C O_{3} + 2 N H_{4} C l$

Because the products obtained $N a_{2} C O_{3} a n d N H_{4} C l$ are highly soluble and the equilibrium will not shift in forward direction.
That's Why in the Solvay process, we cannot obtain sodium carbonate directly by treating the solution containing $(N H_{4})_{2} C O_{3}$ with sodium chloride.

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Preparations and Uses of Sodium Carbonate

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