Question

Why only NaHCO3 precipitates when CO2 is passed through tha ammoniacal brine?

Answer 1

Answer:

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Explanation:

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Answer 2

NaHCO3 precipitates out when CO2 is passed through the ammoniacal brine. It reacts to form sodium bicarbonate.

The explanation for the formation:

• Carbon dioxide reacts with ammonia dissolved in brine which is sodium chloride.
• Sodium hydrogen carbonate is totally insoluble in the solution of ammonium chlorideNH4Cl at 15C.
• It precipitates completely
• Ammonical brine is formed by the reaction of brine solution when bubbled with ammonia gas .
• When carbon dioxide is passed through these solutions it will in turn form sodium bicarbonate.
• This process is known as the Solvay's process for industrial production of sodium bicarbonate.