What is sodium bisulfate


Release time:

2023-11-30

Sodium bisulfate, also known as acid sodium sulfate, is an inorganic compound, chemical formula for NaHSO4, white monoclinic crystal, hygroscopic, acidic aqueous solution, 0.1mol/L sodium bisulfate solution pH is about 1.4.

Sodium bisulfate, also known as acid sodium sulfate, is an inorganic compound, chemical formula for NaHSO4, white monoclinic crystal, hygroscopic, acidic aqueous solution, 0.1mol/L sodium bisulfate solution pH is about 1.4.

Chemical properties

1. Salt attribute: acid salt of strong acid

2, acid and alkaline: the aqueous solution is acidic. Strong electrolyte, completely ionized, resulting in a strong acidic solution: NaHSO4 = Na H SO42-

Note: Hydrogen sulfate is not completely ionized and is a medium and strong acid. (Senior high school textbooks treat hydrogen sulfate as fully ionized)

Therefore, it can react with alkali: NaHSO4 NaOH = Na2SO4 H2O

3. It can undergo double decomposition reaction with weak acid salt: NaHSO4 NaHSO3 = Na2SO4 SO2 ↑ H2O

NaHSO4 NaHCO3=Na2SO4 CO2↑ H2O

Ionic equation: H SO42- HSO3-= SO2 ↑ H2O SO42-

H SO42- HCO3-= CO2 ↑ H2O SO42-

4. React with BaCl2 and Ba(OH)2: NaHSO4 BaCl2 = NaCl HCl BaSO4 ↓

NaHSO4 Ba(OH)2=NaOH H2O BaSO4↓

Involving ionic equation: SO42- Ba2 = BaSO4 ↓

H SO42- Ba2 OH-=BaSO4↓ H2O

If Ba(OH)2 is small, the equation is expressed as: 2H SO42- Ba2 2OH-= BaSO4 ↓ 2H2O [2]

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