84, Polonium (Po)
Polen |
Säure-Base-Verhalten:
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Säure/Base-Verhalten der Polonium-Oxide: |
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Reaktionen mit: |
HF 100% |
H2SO4 conc. |
HCl 20% |
CH3COOH 25% |
H2O |
NH3 25% |
NaOH 10% kalt |
NaOH 50% heiß |
NaOH liq. 400°C |
PoO2 |
PoF4 |
Po(SO4)2 |
PoCl4 |
PoO(CH3COO)2 |
H2PoO3 |
(NH4)2PoO3 |
Na2PoO3 |
Na2PoO3 |
Na2PoO3 |
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Legende: |
Lösung |
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Unlöslich |
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sauer → neutral → alkalisch |
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pKS-Werte von Säure-Base-Paaren (HA + H2O ↔ H3O+ + A-) : |
Säurename |
Formel |
pKS-Wert |
Basenname |
Formel |
pKB-Wert |
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Polonium(VI)-Ion |
Po4+ |
0.48 |
Hydroxo-Polonium(IV)-Ion |
Po(OH)3+ |
13.52 |
Hydroxo-Polonium(IV)-Ion |
Po(OH)3+ |
2.74 |
Dihydroxo-Polonium(IV)-Ion |
Po(OH)22+ |
11.26 |
Dihydroxo-Polonium(IV)-Ion |
Po(OH)22+ |
5.58 |
Trihydroxo-Polonium(IV)-Ion |
Po(OH)3+ |
8.42 |
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Polonige Säure |
H2PoO3 |
4.09 |
Hydrogenpolonit-Ion |
HPoO3- |
9.91 |
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