Rubidium hydrogen sulfate

Colorless crystals

Fixed

2.89 g · cm -3

214 ° C

Template: Infobox chemical / molecular formula search is not possible

Rubidiumhydrogensulfat is a rubidium salt of sulfuric acid.

Production

Rubidiumhydrogensulfat can be prepared by reaction of stoichiometric quantities of water and Rubidiumdisulfat under strict exclusion of moisture.

Analogously to the synthesis of potassium and sodium bisulfate Rubidiumhydrogensulfat from rubidium and moderately warm, concentrated sulfuric acid can be produced. As a byproduct hydrogen chloride.

Properties

Physical Properties

Rubidiumhydrogensulfat is hygroscopic. It crystallizes in the monoclinic crystal system, space group P21 / n with lattice parameters a = 1440 pm, b = 462.2 pm, c = 1436 pm and β = 118.0 °. The crystals are isomorphic to the crystals of ammonium bisulfate.

The standard enthalpy of Rubidiumhydrogensulfat is -1166 kJ / mol. The heat of solution is -15.62 kJ / mol.

Chemical Properties

When annealing Rubidiumhydrogensulfat goes into Rubidiumdisulfat elimination of water.

Similar to potassium and cesium also exists a higher hydrogen sulfate with the formula of rubidium Rb3H (SO4 ) 2