Why can t HCl in CO2 be removed with NaOH and Na2CO3

The reason why it cannot be removed with NaOH is that NaOH and CO2 can react to form sodium carbonate.

The reason why HCl in CO2 cannot be removed with Na2CO3 is that Na2CO3 can react with CO2 and water to form sodium bicarbonate.

So you can't use either of these substances anymore.

Saturated salt water is recommended.

NaOH will react with HCl and CO2 respectively to form NaCl and Na2CO3 or Na2HCO3, similarly, Na2CO3 will also react with non-impurity substances CO2 to form Na2HCO3, so these two substances cannot be used to remove impurities, it is best to use water or Na2HCO3

NaOH and Na2CO3 can indeed react with HCl, but HCl mixed in CO2 cannot be removed with NaOH and Na2CO3, reason: NaOH will react with CO2 and HCl at the same time, and Na2CO3 will also react with CO2 and HCl at the same time, so it is not feasible to remove NaOH and Na2CO3 in CO2, and it is more appropriate to choose saturated NaHCO3 and saturated saline water.

NaOH reacts with HCl and CO2 to form NaCl and H2O, Na2CO3 and H2O (NaHCO3 in excess of CO2).

Na2CO3 also reacts with HCl, CO2 and H2O respectively to produce NaCl and H2O and CO2 and NaHCO3, respectively

And because the solubility of HCL and CO2 is not small, only a limited number of reagents can be used.

A saturated solution of NaCl, this solution is insoluble HCl, soluble CO2

2. NaHCO3 saturated solution, this solution is insoluble in CO2 and dissolves HCl (CO2 gas may increase).

Solid direct pyrolysis.

2NaHCO3 = heating = Na2CO3 + H2O + CO2 solution with sodium hydroxide solution.

nahco3+ naoh = na2co3 + h2o

The reaction conditions are different, and the products are different, in this case because of the reaction rate.

At lower temperatures, the rate of Naclo3 generation is slower, so it is rate controlled, so that the reaction products stay in the Naclo stage;

If the Naclo solution is heated, a further reaction is taken to form sodium chlorate:

3Naclo = 2NaCl + Naclo3 It is right to say that in this example, the degree of disproportionation reaction is temperature dependent.

The degree of disproportionation reaction is independent of the base concentration. But the rate of disaggregation is related to the base concentration.