Atomistry » Platinum » Chemical Properties » Potassium Chlor-platinate
Atomistry »
  Platinum »
    Chemical Properties »
      Potassium Chlor-platinate »

Potassium Chlor-platinate, K2PtCl6

Potassium Chlor-platinate, K2PtCl6, is most readily obtained by adding potassium chloride to an acidulated solution of platinum tetrachloride. It crystallises in cubic octahedra which are yellow in colour and but slightly soluble in water, and still less soluble in alcohol. The formation of this salt is therefore utilised in the quantitative estimation of potassium and platinum.

Its solubility in water at various temperatures is as follows:

Temperature ° C.06.813.846.571100
Grams K2PtCl6 in 100 grams H2O0.7240.8730.9271.7763.0185.23


The heat of formation of potassium chlor-platinate is:

[Pt] + 2(Cl2) + 2KCl.Aq. = K2PtCl6.Aq. + 83.3 Cals.

When ignited, the salt decomposes, yielding a mixture of spongy platinum and potassium chloride. The reaction is not readily completed in air, but in a current of hydrogen the decomposition is quantitatively exact. The density of potassium chlor-platinate is 3.499.

Last articles

Tb in 6TVY
Si in 6Y7O
Rh in 6WRM
Rh in 6WRL
Ni in 6Y8Z
Ni in 6Y8Y
Na in 6ZXZ
Na in 7ACG
Na in 6YLS
Na in 6Y8Z
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy