Synthesis
All syntheses start from the perxenates, which are accessible from the xenates through two methods. One is the disproportionation of xenates to perxenates and xenon:
- 2 HXeO4– + 2 OH– → XeO64– + Xe + O2 + 2 H2O
The other is oxidation of the xenates with ozone in basic solution:
- HXeO4– + O3 + 3 OH– → XeO64– + O2 + 2 H2O
Barium perxenate is reacted with sulfuric acid and the unstable perxenic acid is dehydrated to give xenon tetroxide:
- Ba2XeO6 + 2 H2SO4 → 2 BaSO4 + H4XeO6
- H4XeO6 → 2 H2O + XeO4
Any excess perxenic acid slowly undergoes a disproportionation reaction to xenic acid and oxygen:
- 2 H4XeO6 → O2 + 2 H2XeO4 + 2 H2O
Read more about this topic: Xenon Tetroxide
Famous quotes containing the word synthesis:
“In order to begin an analysis, there must already be a synthesis present in the mind.”
—Johan Huizinga (1872–1945)
“The invention of photography provided a radically new picture-making process—a process based not on synthesis but on selection. The difference was a basic one. Paintings were made—constructed from a storehouse of traditional schemes and skills and attitudes—but photographs, as the man on the street put, were taken.”
—Jean Szarkowski (b. 1925)
“It is in this impossibility of attaining to a synthesis of the inner life and the outward that the inferiority of the biographer to the novelist lies. The biographer quite clearly sees Peel, say, seated on his bench while his opponents overwhelm him with perhaps undeserved censure. He sees him motionless, miserable, his head bent on his breast. He asks himself: “What is he thinking?” and he knows nothing.”
—Andre Maurois (1885–1967)