SODIUM BICARBONATE NaHCO3

Properties of Sodium bicarbonate NaHCO3:

Baking soda, salt Bulriha, nahkolit. White, at low heat decomposes. In the wet state begins to decompose at room temperature. Moderately soluble in water (weak hydrolysis on the anion). Crystalline hydrates do not form. Decomposes by acids, neutralized by alkalis. Participates in the exchange reactions.


Molar mass g/mol 84.01
Density g/cm3 2.24
Solubility in water at 20°C g/100g water 9.59

Obtaining Sodium bicarbonate NaHCO3:

NaOH (diluted) + EO2 = NaHEO3 (E = С, S)

2 NaOH (conc.) + EO2 = Na2EO3 + H2O.

Na2CO3 (saturated) + H2O + CO2 = 2 NaHCO3↓ (30-40° С).

NaCl (saturated) + H2O + NH3 + CO2 = NaHCO3↓ + NH4Cl


Reactions with Sodium bicarbonate NaHCO3:

2 NaHCO3 = Na2CO3 + CO2 + H2O (250-300° С).

NaHCO3 (diluted) + 4H2O = [Na(H2O)4](+) + НСO3(-)

НСO3(-) + H2O ↔ H2CO3 + ОН(-).

NaHCO3 + НСl (diluted) = NaCl + CO2↑ + H2O.

NaHCO3 + NaOH (conc.) = Na2CO3 + H2O.

6 NaHCO3 (conc.) + 3Cl2 = NaClO3 + 5 NaCl + 6CO2↑ + 3H2O (boiling).

NaHCO3 + SO2 (gas) = NaHSO3 + CO2↑.

NaHCO3 + NaH2PO4 = Na2HPO4 + CO2↑ + H2O.

4 NaHCO3 + 2CuSO4 = Cu2CO3(ОН)2 ↓ + 2 Na2SO4 + 3 CO2 ↑ + H2O (boiling).
 

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