POTASSIUM HYDROGEN SULFATE KHSO4

Properties potassium hydrogen sulfate KHSO4:

White. It melts without decomposition, on further heating decomposes. Readily soluble in water, creates an acidic environment due to the complete protolysis of the ion HSO4-. Does not form сrystalline hydrates. Neutralized by the alkali. Reacts with hydrogen peroxide.


Obtaining potassium hydrogen sulfate KHSO4:

2KОН + H2SO4 (diluted) = K2SO4 + 2H2O,

KОН + H2SO4 (conc., cold) = KHSO4 + H2O.

K2SO4 (solid) + H2SO4(conc.) = 2KHSO4.


Chemical reactions with potassium hydrogen sulfate KHSO4:

2KHSO4 = K2SO4 + H2SO4 (240°C).

2KHSO4 = K2S2O7 + H2O (320-340°C).

KHSO4 (conc.) + 6H2O = [K(H2O)6]+ + HSO4-,

HSO4- + H2O = SO42- + H3O+ (dilution with water).

KHSO4 + KOH (conc.) = K2SO4 + H2O.

KHSO4 + KCl = K2SO4 + HCl (450-700°C).

KHSO4 + H2O2 (conc.) = KHSO3(O2) + H2O (0°C).

2KHSO4 + TiO2 = Ti(SO4)O + K2SO4 + H2O (300°C).

6KHSO4 + M2O3 = M2(SO4)3 + 3 K2SO4 + 3H2O (300-500°C; M = Al, Cr).

2KHSO4 (saturated) → Electrolysis → H2↑(cathode) + K2S2O6 (O2)(anode) (0-7°C).
 

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