Pada persamaan reaksi redoks berikut : aMnO4 (aq) + bH+(aq) + cC2O42- (aq) → 2Mn2+(aq) + 8H2O(l) + 10CO2 (g) Harga koefisien reaksi a, b, dan c adalah...
KIMIA KELAS XII 2023

Quiz
•
Chemistry
•
12th Grade
•
Hard
Muhammad Andah
Used 2+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1,4, dan 2
1,8, dan 3
2,6, dan 5
2,8, dan 5
2,16, dan 5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan persamaan reaksi redoks berikut:
2HBr + H2SO4 → Br2 + SO2 + 2H2O
Zat yang merupakan oksidator adalah...
HBr
H2SO4
Br2
SO2
H2O
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diantara reaksi – reaksi berikut yang bukan reaksi redoks adalah...
2KI + Cl2 → KCl + I2
Zn + H2SO4 → ZnSO4 + H2
2K2CrO4 + H2SO4 → K2Cr2O7 + K2SO4 + H2O
H2O2 + H2S → 2H2O + S
2NaOH + Cl2 → NaCl + NaClO + H2O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada reaksi:
Cl2(aq) + 2KOH(aq) → KCl(aq) + KClO(aq) + H2O(l)
Bilangan oksidasi klor( Cl ) berubah dari...
-1 menjadi +1 dan 0
+1 menjadi -1 dan 0
0 menjadi -1 dan -2
-2 menjadi 0 dan +1
0 menjadi -1 dan +1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan persamaan reaksi redoks berikut:
aAl203(s) + bCO(g) → cAl(s) + dCO2(g)
Nilai koefisien a, b, c, dan d adalah...
1, 3, 2, 2
1, 3, 3, 1
2, 3, 1, 3
1, 3, 2, 3
3, 2, 2, 1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui:
Fe2+ + 2e → Fe E0 = -0,44 V
Mg2+ + 2e → Mg E0 = -2,37 V
Cu2+ + 2e → Cu E0 = +0,34 V
Sn2+ + 2e → Sn E0 = -0,14 V
Zn2+ + 2e → Zn E0 = -0,76 V
Reaksi dibawah ini yang berlangsung spontan adalah...
Fe + Mg2+ → Fe2+ + Mg
Zn + Cu2+ → Zn2+ + Cu
Sn + Fe2+ → Sn2+ + Fe
Cu + Zn2+ → Cu2+ + Zn
Cu + Fe2+ → Cu2+ + Fe
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nilai potensial sel Volta dari elektrode Cu dan Ag yang masing-masing mempunyai poten-
Sial reduksi standar +0,34 V dan +0,80 V, maka E0 sel adalah...
-0,46 V
+0,46 V
+1,14 V
-1,14 V
+1,26 V
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