CESIUM PEROXIDE Cs2O2

Properties of cesium peroxide Cs2O2:

White (with a impurity of CsO2 - yellow). Thermally stable, with a strong heated melts and decomposes. Extremely sensitive to O2 of air, absorb moisture and CO2. Completely decomposed by water, acids. Shows redox properties.

 

Obtaining cesium peroxide Cs2O2:

Cs → (O2) Cs2O2↓ → (O2, time) CsO2↓ (-50°C, in liquid NH3).

CsO2 → (400-600°C, -O2) Cs2O2 → (640-980°C, -O2) Cs2O.

 

Сhemical reactions with cesium peroxide Cs2O2:

2 Cs2O2 = 2 Cs2O + O2 (640–980° C).

Cs2O2 + 2H2O = 2 CsOH + H2O2 (0° C).

2 Cs2O2 + 2 H2O(hot)= 4 CsOH + O2↑.

Cs2O2 + 2 HCl(dilute, cold)= 2 CsCl + H2O2.

2 Cs2O2 + 2 H2SO4(dilute, hot)= 2 Cs2SO4 + 2H2O+O2↑.

Cs2O2 + O2(air)= 2 CsO2 (normal temp.).

2 Cs2O2 + 2 CO2 = 2 Cs2CO3 + O2.

Cs2O2 + CO = Cs2CO3 (normal temp.).

5 Cs2O2 + 8 H2SO4(dilute) + 2 CsMnO4 = 5 O2↑ +2 MnSO4 + 6 Cs2SO4 + 8 H2O.

 

 

Did you know?

If you slowly pour a handful of salt into a completely full glass of water, it will not overflow. In fact, the water level will go down.