50, Zinn (Sn)
Stannum, lat. stannum = Zinn |
Säure-Base-Verhalten:
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Säure/Base-Verhalten der Zinn-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 |
SnO |
SnF2 |
SnSO4 |
SnCl2 |
(CH3COO)2Sn |
Sn(OH)2↓ |
Sn(OH)2↓ |
NaSn(OH)3 |
Na2[Sn(OH)6] + Sn↓ |
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SnO2 |
H2SnF6 |
Sn(SO4)2 |
SnCl4 |
SnO2↓ |
SnO2↓ |
SnO2↓ |
Na2[Sn(OH)6] |
Na2[Sn(OH)6] |
Na2SnO3 |
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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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Zinn(II)-Ion |
Sn2+ |
3.40 |
Hydroxozinn(II)-Ion |
Sn(OH)+ |
10.6 |
Hydroxozinn(II)-Ion |
Sn(OH)+ |
3.66 |
Zinn(II)hydroxid |
Sn(OH)2 |
10.34 |
Zinn(II)hydroxid |
Sn(OH)2 |
9.55 |
Trihydroxo-Stannat(II)-Ion |
Sn(OH)3- |
4.45 |
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Zinn(IV)-Ion |
Sn4+ |
-0.60 |
Hydroxo-Zinn(IV)-Ion |
Sn(OH)3+ |
14.6 |
Hydroxo-Zinn(IV)-Ion |
Sn(OH)3+ |
0.08 |
Dihydroxo-Zinn(IV)-Ion |
Sn(OH)22+ |
13.92 |
Dihydroxo-Zinn(IV)-Ion |
Sn(OH)22+ |
0.92 |
Trihydroxo-Zinn(IV)-Ion |
Sn(OH)3+ |
13.08 |
Trihydroxo-Zinn(IV)-Ion |
Sn(OH)3+ |
3.32 |
Zinn(IV)hydroxid |
Sn(OH)4 |
10.68 |
Zinn(IV)hydroxid |
Sn(OH)4 |
7.97 |
Pentahydroxo-Stannat(IV)-Ion |
Sn(OH)5- |
6.03 |
Pentahydroxo-Stannat(IV)-Ion |
Sn(OH)5- |
9.99 |
Hexahydroxo-Stannat(IV)-Ion |
Sn(OH)62- |
4.01 |
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