Į magnio sulfato MgSO4 tirpalą įleista vario Cu juostelė. Kaip ši juostelė atrodė po kiek laiko?

Pavadavimo reakcijos 2

Quiz
•
Chemistry
•
9th Grade
•
Hard
Reda Naikauskienė
Used 21+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
liko nepakitusi
pasidengė magnio Mg sluoksniu
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Į keturis mėgintuvėlius, kuriuose buvo geležies Fe drožlių, įpilta skirtingų medžiagų tirpalų. Kuriame mėgintuvėlyje įvyko reakcija?
Fe(k) + KCl(aq)
Fe(k) + CuSO4(aq)
Fe(k) + ZnSO4(aq)
Fe(k) + AlCl3(aq)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kuri dalelė yra reduktorius 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
Elektronų atidavimas vadinamas......
redukcija
oksidacija
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Elektronų prisijungimas vadinamas...
redukcija
oksidacija
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Oksidatorius elektronus ......
prisijungia
atiduoda
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reduktorius elektronus ... .
prisijungia
atiduoda
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