
Minum Redokson (bukan iklan)
Authored by Yenny Dwi
Chemistry
10th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada persamaan oksidasi reduksi berikut (belum setara),
KMnO4(aq) + KI(aq) + H2SO4 → MnSO4(aq) + I2 (aq) + K2SO4(aq) + H2O(l)
Bilangan oksidasi Mn berubah dari ….
+14 menjadi +8
+7 menjadi +2
+7 menjadi -4
-1 menjadi +2
-2 menjadi +2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Bilangan oksida Cl dari -1 sampai dengan +7. Ion atau molekul manakah di bawah ini yang tidak dapat mengalami reaksi disproporsionasi?
Cl2 dan HClO4
HCl dan HClO2
ClO2 dan HClO3
Cl2 dan KClO3
Cl- dan NaClO4
3.
MULTIPLE CHOICE QUESTION
2 mins • 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 reaksi reduksi ditunjukkan oleh nomor ....
(1), (2), dan (3)
(1), (3), dan (4)
(1), (3), dan (5)
(2), (3), dan (4)
(2), (3), dan (4)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Suatu gas dapat diperoleh dengan cara mereaksikan padatan karbid dengan air. Sesuai dengan persamaan reaksi berikut:
CaC2 (s) + 2 H20 (1) → C2H2 (g) + Ca(OH)2 (aq)
Nama senyawa pereaksi dan hasil reaksi yang diperoleh adalah ....
kalsium (II) karbida dan etana
kalsium dikarbida dan etana
kalsium karbida dan etana
kalsium karbida dan etuna
kalsium dikarbida dan etuna
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Biloks atom Pb dalam senyawa PbO2 sama dengan biloks atom Mn dalam senyawa ...
Mn
MnO
MnO2
KMnO4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pasangan data yang berhubungan dengan tepat terdapat pada nomor ….
1 dan 3
1 dan 4
2 dan 4
3 dan 4
3 dan 5
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Harga a, b, c, d agar reaksi di bawah setara adalah…
a Na (s) + b HCl (aq) NaCl (aq) + d (g)
2-2-2-1
2-1-2-2
1-2-2-2
1-2-2-1
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