Elementi I jedinjenja VIB I VIIB grupe PSE

Create an educational and visually appealing illustration of VIB and VIIB group elements from the periodic table, showcasing their chemical reactions, colors of compounds, and laboratory setups with beakers and test tubes in a colorful style.

Explore the Fascinating World of VIB and VIIB Group Elements

Welcome to our quiz on the VIB and VIIB groups of the periodic table! Test your knowledge on the properties, reactions, and compounds of these intriguing elements.

Join us for a fun learning experience and discover:

  • The exciting chemistry behind elements like Chromium and Manganese
  • Key reactions and color changes in their compounds
  • The significance of oxidation and reduction in various reactions
10 Questions2 MinutesCreated by MixingMetallic32
Ime I prezime
Prilikom termiĝkog razlaganja amonijum-dihromata kao produkti se dobijaju:
Cr2O3+N2+H2O
Cr2O3+O2+H2O
Cr2O3+N2+O2
Cr2O7+N2+H2O
U reakciji 
CrCl3 + 3NH4OH → Cr(OH)3 + 3NH4Cl
Dobija se:
Talog zeleno-sive boje
Rastvor zeleno-sive boje
Talog zelene boje
Rastvor žute boje
Dodatkom baze u rastvor dihromata rastvor menja boju iz:
Narandžaste u žutu
Žute u narandžastu
Zelene u sivu
Sive u zelenu
Talog BaCrO4 je:
Žute boje
Crvene boj
Narandžaste boje
Žute boje
Dihromat ima:
Oksdaciona svojstva
Redukciona svojstva
Mn(OH)2 ima:
Bazni karakter
Kiseli karakter
Amfoterni karakter
Mn2+ jon u reakciji sa MnO4- jonom pokazuje:
Redukcione osbine
Oksidacine osobine
MnO4- jon u kiseloj sredini se:
Redukuje do Mn2+
Oksiduje do Mn2+
Redukuje do Mn6+
Oksiduje do Mn6+
0,9% izrazite u promile
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