Elementi I jedinjenja VIA I VIIA grupe PSE

A classroom setting with a periodic table prominently displayed, featuring elements from Group VIA and VIIA, along with chemistry equipment such as test tubes and beakers, in a bright and informative style.

Test Your Knowledge on Group VIA and VIIA Elements!

Are you ready to challenge yourself with fascinating questions about the elements and compounds of Group VIA and VIIA in the periodic table? This quiz covers essential reactions, properties, and characteristics of these elements, helping you deepen your chemistry knowledge.

  • 11 engaging questions
  • Multiple-choice format
  • Designed for students, educators, and chemistry enthusiasts
11 Questions3 MinutesCreated by MixingMolecule237
Ime I prezime
Elementi VIIA grupe su:
F, Cl, Br, I, At
I, Se, F, Te, S
F, Br, Cl, I, Se
F, Cl, Br, Te, At
Ljubiĝasti rastvor KMnO4 u kiseloj sredini prelazi u bezbojan zbog:
Redukcije Mn+7 u Mn+2
Redukcije Mn+7 u Mn+4
Oksidacije Mn+7 u Mn+2
Redukcije Mn+7 u Mn+6
U višku H2O2 dolazi do redukcije CrO5 u:
Cr3+ jon
Cr6+ jon
Cr4+ jon
Cr2+ jon
U reakciji 2Fe(OH)2 + H2O2 talog crvene boje koji od:
Fe(OH)3
Fe(OH)2
Fe2O3
FeSO4
U reakciji KMnO4 I H2SO3 KMnO4 je:
Oksidaciono sredstvo
Redukciono sredstvo
Reakcija 3NaI + H3PO4 → 3HI↑ + Na3POje moguća jer je:
Fosfatna kiselina slabija od jodidne ali je teže isparljiva
Fosfatna kiselina jaĝa od jodidne I lakše je isparljiva
Fosfatna kiselina slabija od jodidneali je lakše isparljiva
Jodidna kiselina je slabija od fosfatne
U reakciji 3NaI + H3PO4 → 3HI + Na3POdolazi do izdvajanja mehurića koji potiĝu od:
HI
O2
CO2
NaI
Jod se:
Ne rastvara u vodi
Ne rastvara u vodenom rastvoru KI
Rastvara u vodi
Ne rastvara u heksanu
Usled delovanja sulfatne kiseline na šećer dobija se talog koji potiĝe od (upisati formulom):
Email:
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