RUBIDIUM SULFATE Rb2SO4

Properties Rubidium sulfate Rb2SO4:

White, flying, melts and boils without decomposition. Readily soluble in water (without hydrolysis). Does not form crystalline hydrates. Participates in exchange reactions.

 

Obtaining rubidium sulfate Rb2SO4:

8 Rb + 6 H2SO4 (diluted, cold) = 4 Rb2SO4 + SO2 + S↓ +  6H2O (impurity H2S).

2 RbCl (solid) + H2SO4(conc.) = Rb2SO4 + 2HCl↑ (boiling).

RbCl + RbHSO4 = Rb2SO4 + HCl (500—600° C).

Rb2S (solid) + 2 O2 = Rb2SO4 (t> 500° С).

 

Сhemical reactions with rubidium sulfate Rb2SO4:

Rb2SO4 (diluted) + 12 H2O = 2 [Rb(H2O)6]+ + SO42- (pH 7).

Rb2SO4 + H2SO4(conc.) = 2 RbHSO4.

Rb2SO4 + BaE2 = BaSO4↓ + 2 RbE (E = Cl-, OH-).

Rb2SO4 + Al2(SO4)3 + 24 H2O = 2 {RbAl(SO4)2·12H2O}↓ (alum).
 

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