Quiz Kimia Redoks

Quiz
•
Chemistry
•
12th Grade
•
Hard
Garota Manonsih
Used 2+ times
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reaksi redoks: MnO4- (aq) + C2O42-(aq) ⟶ Mn2+(aq) + CO2(g). Persamaan reaksi C2O42- ⟶ CO2 melepas….. elektron.
1
2
3
4
5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika reaksi redoks: MnO4- (aq) + Br- (aq) ⟶ Mn2+(aq) + Br2(g) disetarakan dengan perubahan bilangan oksidasi, setelah sampai pada tahapan 2 MnO4- (aq) + 10 Br- (aq) ⟶ Mn2+(aq) + 5Br2(g) langkah berikutnya adalah…
ruas kanan + 4H2O
ruas kanan + 8H2O
ruas kanan + 16H+
ruas kiri + 8H+
ruas kiri + 4H+
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika diketahui: ZnCs) + Cu2+(aq) ⟶ Zn2+(aq) + Cu(s) E° = +1,10 V Sn2+(aq) + 2 e ⟶ Sn(s) E° = -0 ,1 4 V Cu2+(aq) + 2 e ⟶ Cu(s) E° = +0,34 V maka potensial standar untuk reaksi: Zn(s) + Sn2+(aq) ⟶ Zn2+(aq) + Sn(s), adalah . . . .
+1,44 V
+1,24 V
+0,96 V
+0,76 V
+0,62 V
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ka potensial standar untuk reaksi: Zn(s) + Sn2+(aq) ⟶ Zn2+(aq) + Sn(s), adalah . . . .
+1,44 V
+1,24 V
+0,96 V
+0,76 V
+0,62 V
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dari data potensial elektrode standar berikut: Cu2+ + 2e ⟶ Cu E° = 0,34 V Ag+ + e ⟶ Ag E° = 0,80 V Maka reaksi: Cu + 2Ag+ ⟶ Cu2+ + 2Ag memiliki potensial sel sebesar . . . .
0,06 V
0,46 V
0,57 V
1,14 V
1,26 V
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu sel volta menggunakan perak dan zink sebagai elektrode-elektrodenya. Ag+(aq) + e ⟶ Ag(s) E° = +0,80 V Zn2+(aq) + 2e ⟶ Zn(s) E° = -0,76 V Pernyataan yang benar adalah . . . .
Ag bertindak sebagai anode
Zn merupakan elektrode positif
potensial sel sebesar 2,36 V
reaksi selnya adalah 2Ag+{aq) + Zn(s) ⟶ 2Ag(s) + Zn2+(aq)
Ag mengalami oksidasi
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perkaratan besi adalah salah satu contoh reaksi redoks. Rumus perkaratan besi adalah . . . .
Fe2O3 . xH2O
Fe3O4 . xH2O
FeCl3 . xH2O
Fe(NO3)3 . xH2O
Fe(OH)3 . xH2O
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