
Pavadavimo reakcijos
Quiz
•
Chemistry
•
4th Grade
•
Practice Problem
•
Hard
Reda Naikauskienė
Used 24+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Geležinė Fe vinis panardinta į vario sulfato CuSO4 vandeninį tirpalą. Kaip ši vinis atrodė po kiek laiko?
liko nepakitusi
pasidengė vario Cu sluoksniu
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Į keturis mėgintuvėlius, kuriuose buvo vario Cu drožlių, įpilta skirtingų medžiagų tirpalų. Kuriame mėgintuvėlyje įvyko reakcija?
Cu(k) + KCl(aq)
Cu(k) + AgNO3(aq)
Cu(k) + H2SO4(aq)
Cu(k) + ZnCl2(aq)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuri dalelė yra oksidatorius reakcijoje
Cu(k) + 2AgNO3(aq)----2Ag(k) + Cu(NO3)2(aq)
Cu0(k)
Ag0(k)
Ag+(aq)
Cu2+(aq)
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Oksidatorius elektronus ......
prisijungia
atiduoda
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reduktorius elektronus ... .
prisijungia
atiduoda
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koks oksidacijos laipsnis yra Zn(k) atome?
-2
0
+2
-1
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Koks oksidacijos laipsnis vario šiame junginyje CuCO3?
+6
0
+2
+3
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