
Oxydoréduction 1ère spécialité
Authored by Aymeric PEROUX
Chemistry
10th Grade
Used 6+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Un oxydant est un
accepteur d'électrons
donneur d'électrons
accepteur ou donneur d'électrons suivant les cas
2.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Pour le couple Zn2+(aq)/Zn(s)
Zn2+(aq) est le réducteur
Zn2+(aq) est l'oxydant
Zn(s) est un donneur d'électrons
Zn(s) est un accepteur d'électrons
3.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Pour le couple Al3+(aq)/Al(s), la demi-équation électronique peut s'écrire :
Al(s) + 3 e- <-> Al3+(aq)
Al(s) <-> Al3+(aq) + 3 e-
Al3+(aq) + 3 e- <-> Al(s)
Al3+(aq) <-> Al(s) + 3 e-
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
La demi-équation électronique 2 H+(aq) + 2 e- <-> H2 (g) correspond au couple :
2H+(aq)/H2 (g)
H+(aq)/H2 (g)
H2 (g)/2H+(aq)
H2 (g)/H+(aq)
5.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Dans la demi-équation Hg22+(aq) + 2e- <-> 2 Hg(l)
Hg(l) est le réducteur
Hg22+(aq) cède des électrons
Hg22+(aq) est un oxydant
Hg(l) accepte des électrons
6.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Dans la demi-équation Cu2+(aq) + 2e- <-> Cu(s)
Cu2+(aq) est oxydé
Cu2+(aq) est réduit
Cu(s) est oxydé
Cu(s) est réduit
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
La transformation de Al en Al3+ est
une oxydation
une réduction
une réaction d'oxydoréduction
impossible
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