CESIUM CARBONATE Cs2CO3

Properties of cesium carbonate Cs2CO3:

White, at calcination decomposes, melts under pressurized CO2. Sensitive to moisture and CO2 of air. Very soluble in water (strong hydrolysis of the anion), creates a highly alkaline environment. Decomposed by acids. Participates in exchange reactions.

 

Obtaining cesium carbonate Cs2CO3:

Cs2O + CO2(humid) = Cs2CO3 (normal temp.),

Cs2O + H20 + 2 CO2 = 2 CsHCO3 (normal temp.).

CsOH (conc.) + CO2 = Cs2CO3 + H2O.

 

Сhemical reactions with cesium carbonate Cs2CO3:

Cs2CO3 = Cs2O + CO2 (620 - 1000°C, vacuum).

Cs2CO3x3.5H2O = Cs2CO3 + 3.5 H2O, (150-160°C).

Cs2CO3 (diluted) + 12 H2O = 2[Cs(H2O)6]+ + (CO3)2-,

(CO3)2- + H2O = HCO3- + OH-, pK0 = 3.67

Cs2CO3 + 2HCl(diluted) = 2CsCl + CO2↑+ H2O.

Cs2CO3 (saturated) + 2 HClO4(conc. cold) = 2CsClO4↓ + CO2↑ + H2O.

Cs2CO3 + H2O + CO2 -> 2 CsHCO3 (20°C),

2 CsHCO3 -> Cs2CO3 + H2O + CO2 (170-180°C).

Cs2CO3 + Ca(OH)2 (saturated) = 2CsOH + CaCO3↓.
 

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