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A)NaHCO3 

B)Ca(OH)

C)CaCl2

D)NH4Cl

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The correct answer is C) CaCl2 

Explanation::-

 

This process is also termed as ammonia recovery .

The calcium hydroxide is reacted with the ammonium chloride separated out of the carbonating tower by filtration:

Ca(OH)2(aq) + 2NH4Cl(aq) → CaCl2(aq) + 2H2O(l) + 2NH3(g) 

The ammonia is recycled back into the process to form ammoniated brine.

Calcium chloride is formed as a by-product of the Solvay Process . 

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