
Pre test Reaksi Redoks
Authored by Budhi Endarwati
Chemistry
12th Grade
Used 6+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1. Kalsium hipoklorit, Ca(ClO)2 atau dikenal dengan nama kaporit merupakan senyawa kimia yang digunakan untuk pengolahan air dan sebagai zat pemutih.
Bilangan oksidasi atom klorin pada senyawa tersebut adalah ….
+1
-1
+-2
+2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada reaksi :
MnO42- + H+ --> MnO4- + MnO2 + H2O
Bilangan oksidasi Mn berubah dari ….
-2 menjadi -1 dan 0
+6 menjadi +7 dan 0
+6 menjadi +7 dan +4
+8 menjadi +7 dan +4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan reaksi berikut :
Cl2(g) + KBr(aq) --> KCl(aq) + Br2(l)
Pernyataan yang benar sesuai reaksi tersebut adalah ….
Cl2 mengalami oksidasi
Cl2 bertindak sebagai reduktor
KBr bertindak sebagai reduktor
KBr mengalami reduksi
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diberikan lima persamaan reaksi oksidasi atau reduksi yang belum setara.
(1) MnO4- --> MnO42-
(2) SO2 --> SO3
(3) C2H4 --> C2H6
(4) FeO --> Fe2O3
(5) Cl2 +2e- --> 2Cl-
Kelompok persamaan reaksi yang mengalami reduksi ditunjukkan oleh nomor-nomor ….
(1), (2), dan (3)
(1), (3), dan (4)
(1), (3), dan (5)
(2), (3), dan (5)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Di antara reaksi-reaksi berikut ini, yang bukan merupakan reaksi redoks adalah ….
H2 + Cl2 --> 2HCl
MnO2 + 4HCl --> MnCl2 + 2H2O + Cl2
CuO + 2HCl --> CuCl2 + H2O
CuO + 2HCl --> CuCl2 + H2O
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