SODIUM HYDROGEN SULFATE NaHSO4

Properties of sodium hydrogen sulfate NaHSO4:

White. Melts without decomposition, on further heating decomposes. Readily soluble in water, creates an acidic environment due to the complete protolysis of the ion HSO4-. Crystalline NaHSO4-H2O has the structure of Na+-H3O+-SO42-. Neutralized by the alkali. Participates in the exchange reactions.


Molar mass g/mol 120.06
Density g/cm3 2.742
Melting point °C 186
Solubility in water at 0°C g/100g water 28.6

Obtaining sodium hydrogen sulfate NaHSO4:

2NaOH + H2SO4 (diluted) = Na2SO4 + H2O.

NaOH + H2SO4 (conc., cold) = NaHSO4 + H2O.

Na2SO4 (solid) + H2SO4 (conc.) = 2NaHSO4 (solution).

NaCl (solid) + H2SO4 (conc.) = NaHSO4 + HCl↑ (50°C)

2NaCl (solid) + H2SO4 (conc.) = Na2SO4 + 2HCl↑ (boiling).

H2SO4 (conc., cold) + NaOH = NaHSO4 + H2O

H2SO4 (diluted) + 2NaOH = Na2SO4 + 2 H2O.

H2SO4 (conc.) + NaCl (solid) = NaHSO4 + HCl↑ (30-50°C)

H2SO4 (conc.) + 2NaCl (solid) = Na2SO4 + 2HCl↑ (boiling).

H2SO4 (conc.) + Na2SO4 = 2NaHSO4 (40°C).


Reactions with sodium hydrogen sulfate NaHSO4:

2NaHSO4 = Na2S2O7 + H2O (250-320°C, vacuum).

NaHSO4-H2O = NaHSO4 + H2O (120°C, vacuum)

2(NaHSO4-H2O) = Na2S2O7 + 3H2O (250°C).

NaHSO4 (conc.) + 4H2O = [Na(H2O)4](+) + HSO4(-).

HSO4(-) + H2O = SO4(2-) + H3O(+) (dilution).

NaHSO4 + NаOH (conc.) = Na2SO4 + H2O.

NaHSO4 + NaCl = Na2SO4 + HCl (450-800°C).
 

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