Atomistry » Selenium » Chemical Properties » Diselenotrithionic Acid
Atomistry »
  Selenium »
    Chemical Properties »
      Diselenotrithionic Acid »

Diselenotrithionic Acid, H2Se2SO6

If in the interaction of selenious and sulphurous acids an excess (that is, more than a semi- molecular proportion) of the former is taken, the odour of sulphur dioxide soon disappears and apparently a Diselenotrithionic Acid, H2Se2SO6, is formed in the solution:

2H2SO3 + 2H2SeO3 = H2Se2SO6 + H2SO4 + 2H2O.

The acid is even less stable than selenotrithionic acid; its aqueous solution decomposes in the light or on warming; in fact, it cannot even be preserved in the dark. Acids and alkalis also bring about its decomposition. Treatment with barium carbonate, as in the case of the preceding acid, gives a solution of the barium salt which, however, is less stable than barium selenotrithionate, and the solution decomposes slowly in the dark.

Last articles

Ca in 7SG2
Ca in 7SG1
Ca in 7SFI
Ca in 7S6E
Ca in 7SFH
Ca in 7SC3
Ca in 7SC2
Ca in 7S8K
Ca in 7S8D
Ca in 7SA3
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy