RUBIDIUM SUPEROXIDE RbO2

Properties Rubidium superoxide RbO2:

The orange-yellow. Decomposes when heated, melts under excess pressure of O2. Ion has the structure of (Rb +) (O2-). Reacts vigorously with water, acids, ozone, mono and carbon dioxide, ammonia. It is a strong oxidizing agent.

 

Obtaining rubidium superoxide RbO2:

Rb + O2 (air) = RbO2 (combustion).

4 Rb + O2 = 2 Rb2O (in the cold), Rb → (O2) Rb2O2 →(O2) , (time) RbO2↓ (-50° C, in the liquid NH3).

4 RbOH (liquid) + 3 O2 = 4 RbO2 + 2 H2O (450° C),

 

Сhemical reactions with rubidium superoxide RbO2:

RbO2 (-O2)→ (400—800° C) Rb2O2 (-O2)→(t> 1010° C) Rb2O,

2 RbO2 = Rb2O2 + O2 (290° C, vacuum).

2 RbO2 + H2O = RbOH + RbHO2 (solution) + O2↑ (0° C),

2 RbHO2 (solution) →(time) 2 RbOH + O2↑ (normal temp.).

4 RbO2 + 2 H2O (combustion) = 4 RbOH + 3O2↑.

2 RbO2 + 2 HCl (diluted, cold) = 2 RbCl + H2O2 + O2↑.

2 RbO2 + 2 H2SO4 (anhydrous) = 2 RbHSO4 + O3↑ + H2O (normal temp.).

4 RbO2 + 2 CO2 (humid) = 2 Rb2CO3 + 3O2 (normal temp.),

2 RbO2 + CO = Rb2CO3 + O2 (30—40° C).

RbO2 + O3 = RbO3 + O2 (normal temp.).

2 RbO2 + 2 NH3 →(time) 2RbOH + N2 + 2H2O (normal temp.).

 

Did you know?

Hydrogen is the most abundant element in the universe, while oxygen is the most abundant element in the earth's atmosphere, crust, and oceans (about 49.5%).