
12179245
Authored by ANTON SUWARDI
Chemistry
12th Grade

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40 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Unsur logam yang mempunyai bilangan oksidasi +5 terdapat pada ion ....
SbO43-
MnO4-
Fe(CN) 3-
CrO42-
Cr2O72-
2.
MULTIPLE CHOICE QUESTION
2 mins • 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)
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada reaksi redoks berikut: 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
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berikut adalah reaksi redoks senyawa klor:
(1) ClO2- → ClO3-
(2) ClO4- → Cl-
(3) ClO2-→ ClO-
(4) ClO-→ ClO4-
(5) Cl2 → ClO3-
Reaksi diatas yang merupakan reaksi reduksi adalah reaksi nomor….
(1) dan (2)
(1) dan (3)
(2) dan (3)
(3) dan (4)
(4) dan (5)
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berikut adalah beberapa reaksi redoks:
(1) MnO4- → MnO2
(2) Zn → ZnO2-
(3) 2CO2 → C2O42-
(4) Cr2O3 → CrO42-
Peristiwa oksidasi terdapat pada reaksi…..
(1) dan (2)
(1) dan (3)
(1) dan (4)
(2) dan (4)
(2) dan (3)
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perhatikan persamaan reaksi berikut H2S + HNO2 → S + NO + H2O Zat yang mengalami oksidasi adalah…
H2S
HNO2
S
NO
H2O
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diantara reaksi redoks berikut ini yang sudah setara adalah…
4H2O + MnO4- + 6I- → 2MnO2 + 8OH- + 3I2
3P + 5NO3- + 4OH- → 3PO43- + 2H2O + 5NO
Cl2 + 2OH- + IO3-→ 2Cl-+ IO4- + 2H2O
11OH- + 6Cl2 → 10Cl- + 2ClO3- + 6H2O
8MnO4+3NH3→8MnO2+2H2O+5OH-+ 3NO3-
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