Elementi I jedinjenja VIA I VIIA grupe PSE
Explore the Chemistry of Group VIA and VIIA Elements
Test your knowledge on the intriguing properties and reactions of elements from the VIA and VIIA groups of the periodic table. This quiz will challenge your understanding of various chemical concepts and reactions related to these groups.
- Multiple choice questions
- Focus on elements and their compounds
- Understand chemical interactions and reactions
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 reakciji 2Fe(OH)2 + H2O2 → 2Fe(OH)3 nastaje:
Talog crvene boje
Talog zelene boje
Rastvor crvene boje
Talog zelene boje
Reakcija 3NaI + H3PO4 → 3HI↑ + Na3PO4 je 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
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