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・ Potassium ferrate
・ Potassium ferricyanide
・ Potassium ferrioxalate
・ Potassium ferrocyanide
・ Potassium fluoride
・ Potassium fluoride on alumina
・ Potassium formate
・ Potassium fulminate
・ Potassium fumarate
・ Potassium gluconate
・ Potassium heptafluorotantalate
・ Potassium hexachloroplatinate
・ Potassium hexacyanochromate(III)
・ Potassium hexafluorocuprate(III)
・ Potassium hexafluoronickelate(IV)
Potassium hexafluorophosphate
・ Potassium humate
・ Potassium hydride
・ Potassium hydrogen phthalate
・ Potassium hydrogenacetylenedicarboxylate
・ Potassium hydrogenoxalate
・ Potassium hydrosulfide
・ Potassium hydroxide
・ Potassium hypochlorite
・ Potassium hypomanganate
・ Potassium in biology
・ Potassium iodate
・ Potassium iodide
・ Potassium lactate
・ Potassium lauryl sulfate


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Potassium hexafluorophosphate : ウィキペディア英語版
Potassium hexafluorophosphate

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Potassium hexafluorophosphate is the chemical compound with the formula KPF6. This colourless salt consists of potassium cations and hexafluorophosphate anions. It is prepared by the reaction:
:PCl5 + KCl + 6 HF → KPF6 + 6 HCl
This exothermic reaction is conducted in liquid hydrogen fluoride. The salt is stable in hot alkaline aqueous solution, from which it can be recrystallized. The sodium and ammonium salts are more soluble in water whereas the rubidium and caesium salts are less so.
KPF6 is a common laboratory source of the hexafluorophosphate anion, a non-coordinating anion that confers lipophilicity to its salts. These salts are often less soluble than the closely related tetrafluoroborates.
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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