2K[PF6] + 2HNO3 + 5H2O H[PO2F2] + H2[PO3F] + 9HF + 2KNO3
Potassium hexafluorophosphate(V) react with nitric acid and water to produce hydrogen difluorodioxophosphate(V), hydrogen fluorotrioxophosphate(V), hydrogen fluoride and potassium nitrate. Nitric acid - concentrated, heated solution.