REDOKS
Authored by Agung Nurhidayat
Chemistry
10th Grade
Used 65+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 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)
(1) dan (2)
(2) dan (4)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Reaksi berikut termasuk reaksi oksidasi jika dilihat dari kemampuan menerima atau melepaskan oksigen adalah...
2Na2O → 4Na + O2
2BaO2 →2BaO + O2
2K + O2 →2K2O
Cu2O + H2→2Cu + H2O
2Na2O2 →2Na2O + O2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dari beberapa reaksi berikut :
(1) Al3+ + 3OH- → Al(OH)3
(2) Zn + H2SO4 → ZnSO4 + H2
(3) Pb2+ + 2Br- → PbBr2
(4) H2 + Cl2 → 2HCl
(5) HF + NH3 → NH4F
yang merupakan reaksi redoks adalah ….
(1) dan (2)
(1) dan (3)
(2) dan (3)
(2) dan (4)
(3) dan (5)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berikut adalah reaksi redoks senyawa klor :
(1) ClO2- → ClO3-
(2) ClO4- → Cl-
(3) ClO2- → ClO-
(4) ClO- → ClO4-
(5) Cl2 → ClO3-
yang bertindak sebagai oksidator terdapat pada reaksi....
(1) dan (2)
(1) dan (3)
(2) dan (3)
(3) dan (4)
(4) dan (5)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Unsur mangan dapat membentuk banyak senyawa, di bawah ini senyawa mangan dengan bilangan oksidasi tertinggi adalah ....
MnO₂
KmnO₄
K₂MnO₄
MnO
MnCl₂
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perhatikan persamaan reaksi berikut :
H2S + HNO2 → S + NO + H2O
Zat yang bertindak sebagai oksidator adalah…
H2S
HNO2
S
NO
H2O
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Perhatikan reaksi redoks 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
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