POTASSIUM BICARBONATE KHCO3

Properties potassium bicarbonate KHCO3:

White, with moderate heating decomposes without melting. Stable in air. Have the structure (K)2(HCO3)2-2. Readily soluble in water (hydrolysis on the weak anion). Does not form Crystalline hydrates. Decomposes by acid, neutralized by alkalis. Participates in exchange reactions.


Molar mass g/mol 100.11
Density g/cm3 2.17

Obtaining potassium bicarbonate KHCO3:

2KOH (conc.) + EO2 = K2EO3 + H2O (E = C, S),

KOH + CO2 = KHCO3↓ (in ethanol).

K2CO3 + H2O + CO2 = 2KHCO3 (30-40° C).


Сhemical reactions with potassium bicarbonate KHCO3:

2KHCO3 = K2CO3 + CO2 + H2O (100-400° C).

KHCO3 (diluted) + 6H2O = [K(H2O)6]+ + HCO3-,

HCO3- + H2O ↔ H2CO3 + OH-;

KHCO3 + HCl (diluted) = KCl + CO2↑ + H2O.

KHCO3 + KOH (conc.) = K2CO3 + H2O.

6KHCO3 (conc.) + 3Cl2 = KClO3 + 5KCl↓ + 6CO2↑ + 3H2O.

KHCO3 + SO2 = KHSO3 + CO2↑.

4KHCO3 + 2CuSO4 = Cu2CO3(OH)2↓ + 2K2SO4 + 3CO2↑ + H2O (boiling).
 

Did you know?

There are 4 basic reactions: single replacement, double replacement, synthesis and decomposition.