Potassium hexafluorophosphate | Wikipedia audio article
Channel: wikipedia tts
Date: 25/10/2018

This is an audio version of the Wikipedia Article:
Potassium hexafluorophosphate

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SUMMARY
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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 HClThis 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.