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Hemija prijemni > Gvožđe i njegova jedinjenja > Flashcards

Gvožđe i njegova jedinjenja Flashcards

1
Q

Osobine gvoždja?

A

Prelazni metal, mek, žilav, dobro provodi elektricitet, ima visoke temperature topljenja i ključanja, kao i veliku gustinu magnetna svojstva

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2
Q

Kada rđa Fe?

A

U kontaktu sa vlažnim vazduhom

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3
Q

Koje oksidacione brojeve moze imati Fe?

A

+2+3, naelektrsanje jona odgovara oksidacionom broju

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4
Q

Koji je jedini oblik u kome je moguće naći čisto gvozdje u zemljinoj kori?

A

Meteorsko gvoždje

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5
Q

Koje rude Fe su najzastupljenije?

A

oksidne i sulfidne

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6
Q

Koji je naziv Fe2O3?

A

hematit

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7
Q

Koji je naziv Fe3O4?

A

magnetit

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8
Q

Koji je naziv FeS2?

A

pirit

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9
Q

Kako se dobija Fe?

A

Redukcion koksom oksida fe.

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10
Q

Koje okside gradi Fe?

A

gvoždje(II)-oksid i gvoždje(III)oksid

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11
Q

Kakav je karakter oksida gvoždja?

A

Bazni

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12
Q

Od soli gvožđa koja so ima najveći tehnički značaj?

A

FeSO4x7H2O zelena galica

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Hemija prijemni (21 decks)

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