
SOAL EVALUASI REDOKS
Authored by Siti Nur WILI YANI
Chemistry
3rd Grade
Used 1+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Salah satu contoh dari reaksi reduksi adalah ....
pernapasan
karat besi
fotosintesis
pembakaran
perubahan warna cokelat pada irisan buah apel ketika dibiarkan di udara
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan reaksi-reaksi berikut ini:
(1) C (s) + O2 (g) → CO2 (g)
(2) MgO (s) → Mg (s) + ½ O2 (g)
(3) 2S (s) + 3O2 (g) → SO3 (g)
(4) H2O (l) → H2 (g) + ½ O2 (g)
Di antara reaksi-reaksi di atas yang merupakan reaksi reduksi adalah….
(1) dan (2)
(2) dan (3)
(1) dan (3)
(2) dan (4)
(3) dan (4)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan persamaan reaksi berikut : H2S + HNO2 → S + NO + H2O
Zat yang bertindak sebagai oksidator adalah…
H2S
HNO2
S
NO
H2O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan reaksi redok berikut :
3 Cl2 + 6 NaOH → 5 NaCl + NaClO3 + 3 H2O
Pernyataan berikut yang benar adalah....
Cl2 mengalami oksidasi, biloks berubah dari 0 menjadi +1
Cl2 mengalami reduksi, biloks berubah dari +1 menjadi 0
Cl2 mengalami autoredoks, biloks berubah dari 0 menjadi -1 dan +3
Cl2 mengalami autoredoks, biloks berubah dari 0 menjadi -1 dan +5
NaOH mengalami reduksi, bilok turun dari +1 menjadi 0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui beberapa reaksi berikut :
(1) MnO4- → MnO2
(2) Zn → ZnO22-
(3) 2CO2 → C2O42-
(4) Cr2O3 → Cr2O72-
Peristiwa oksidasi pada pasangan reaksi dengan nomor ….
1 dan 2
1 dan 3
1 dan 4
2 dan 3
2 dan 4
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