
Quiz Kimia Redoks
Authored by Purwo Rahadityo
Chemistry
12th Grade
Used 1+ times

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32 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bilangan oksidasi kromium yang sama pada pasangan senyawa berikut adalah ….
K₂Cr₂O₇ dan Cr₂O₃
K₂Cr₂O₇ dan Cr(OH)₄
K₂CrO₄ dan K₂Cr₂O₇
K₂CrO₄ dan Cr(OH)₄
Cr(OH)₄ dan Cr₂O₃
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diantara reaksi-reaksi di bawah ini, yang bukan merupakan reaksi redoks adalah….
SnCl₂ + I₂ + 2HCl → SnCl₄ + 2HI
H₂ + Cl₂ → 2HCl
Cu₂O + C → 2Cu + CO
Cu₂O + 2HCl → CuCl₂ + H₂O
MnO₂ + 4HCl → MnCl₂ + 2H₂O + Cl₂
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jumlah H⁺ dan elektron terlibat yang tepat untuk setengah reaksi oksidasi Cr³⁺ menjadi CrO₄²⁻ pada suasana asam adalah ....
4H⁺ dan 3e⁻
8H⁺ dan 3e⁻
4H⁺ dan 6e⁻
8H⁺ dan 6e⁻
8H⁺ dan 7e⁻
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koefisien a, b, dan c yang tepat untuk setengah reaksi aCr₂O₇²⁻ + bH⁺ + e⁻ → Cr³⁺ + cH₂O adalah ….
1, 14, 7
2, 14, 7
1, 7, 14
2, 7, 14
2, 7, 16
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada reaksi redoks 3Cl₂ + 6NaOH → 5NaCl + NaClO₃ + 2H₂O. Bilangan oksidasi atom Cl berubah dari ....
+1 menjadi -1
-1 menjadi +1
0 menjadi -1
0 menjadi -1 dan +5
0 menjadi -1 dan +7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Potensial standar sel volta yang terdiri dari elektroda Ni dan Pb adalah ….
-0,38 v
-0,03 v
+0,12 v
+0,25 v
+0,38 v
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dengan data tersebut disusun sel volta. Pernyataan di bawah ini yang benar adalah ….
logam Mg sebagai katoda
reaksi: Sn + Mg²⁺ → Mg + Sn²⁺ berlangsung spontan
potensial sel yang terjadi +2,57 volt
logam Sn bertindak sebagai elektrode positif
elektroda Sn larut
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