9-Prehodni Elementi, Skupine 3 Do 11 Flashcards

1
Q

III sk.
lantanoidi so močni reducenti, Ln oksidi so bazični
reagirajo z vodo in CO2

A

Ln2O3 + 3 CO2 → Ln2(CO3)3
in
Ln2O3 + 3 H2O → 2 Ln(OH)3

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2
Q

pridobivanje UF6 je tehnološko pomembno (najtežji znani plin)

A

UO2 + 4 HF → UF4 + 2 H2O

3 UF4 + 2 ClF3 → 3 UF6 + Cl2

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3
Q
IV sk
Pridobivanje Ti (iz ilmenita)
A

2 FeTiO3 + 7 Cl2 + 6 C (900ºC) → 2 TiCl4 + 2 FeCl3 + 6 CO

TiCl4 + 2 Mg (1000ºC)→ Ti + 2 MgCl2

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4
Q

tudi TiO2 se pridobiva iz ilmenita

A

FeTiO3 + 2H2SO4 → FeSO4 + TiO(SO4) + 2H2O

TiOSO4 + (n+1)H2O → TiO2 •nH2O + H2SO4 (anatas)
TiO2 •nH2O → TiO2 + nH2O (rutil)

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5
Q

TiO2 reagira s številnimi oksidi in karbonati

A

TiO2 + 2 ZnO → Zn2TiO4
in
TiO2 + BaCO3 → BaTiO3 + CO2

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6
Q

pridobivanje Fe iz jekla

A

FeCr2O4 + 4 C → Fe + 2 Cr + 4 CO

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7
Q

Fe v kislinah

A

Fe + H2SO4 (razr.) → FeSO4 + H2 (25ºC)

Fe + 4HNO3 → Fe(NO3 ) 3 + NO + 2H2O (80ºC)

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8
Q

Pt + zlatotopka

A

Pt + 2KCl + 2HNO3 + 6HCl → K2PtCl6 + NOCl+4H2O

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9
Q

Pridobivanje Cu

A

2 Cu2 S + 3 O2 → 2 Cu2O + 2 SO2

2 Cu2O → 4 Cu + O2 (segrevanje)

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10
Q

Cink reagira s kislinami in hidroksid

A

Zn + H2SO4  ZnSO4 + H2

Zn + 2NaOH + 2H2O → Na2 [Zn(OH)4 ] + H2

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