Atomistry » Rhodium » Chemical Properties » Sodium Rhodium Sulphate
Atomistry »
  Rhodium »
    Chemical Properties »
      Sodium Rhodium Sulphate »

Sodium Rhodium Sulphate, Na2SO4.Rh2(SO4)3

Sodium Rhodium Sulphate, Na2SO4.Rh2(SO4)3, was first prepared by Bunsen by heating sodium rhodium sulphite with concentrated sulphuric acid. This salt was regarded by Seubert and Kobbe as an anhydrous rhodium alum. Since then, however, true rhodium alums have been obtained.

Rhodium sulphate, like its analogues the sulphates of cobalt and iridium, yields stable salts with sulphates of the alkali metals known as alums. These are well-defined crystalline salts, isomorphous with the better known iron and aluminium alums. They thus form an interesting link between these metals and the central vertical column in Group VIII, of which rhodium is the middle member. These alums are obtained when a solution of rhodium sesquioxide in sulphuric acid is added to an alkali sulphate and allowed to crystallise. It is essential that excess of acid be present, and not more than about two-thirds of the theoretical quantity of alkali sulphate. The temperature must not be allowed to rise too high.

Last articles

Zn in 7VD8
Zn in 7V1R
Zn in 7V1Q
Zn in 7VPF
Zn in 7T85
Zn in 7T5F
Zn in 7NF9
Zn in 7M4M
Zn in 7M4O
Zn in 7M4N
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy