Nilai bilangan okidasi dari Cr didalam K2CrO4 adalah . . .
PAS KIMIA KELAS 12 MIPA

Quiz
•
Chemistry
•
12th Grade
•
Hard
SMA Official
Used 59+ times
FREE Resource
30 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A. 4
B. 5
C. 6
D. 7
E. 8
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Reaksi Redoks :
Yang berperan sebagai oksidator pada reaksi di atas adalah . . .
A. NaI
B. H2SO4
C. Mn2+
D. I–
E.MnO2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diantara reaksi-reaksi dibawah ini yang merupakan reaksi redoks adalah . . .
A. AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3 (Aq)
B. 2KI (aq) + Cl2 (aq) → I2 (s) + 2KCI (aq)
C. NH3 (aq) + H2O (l) → NH4+ (aq) + OH– (aq)
D. NaOH (aq) + CH3COOH (aq) → CH3COONa (aq) + H2O (l)
E. Al2O3 (s) + 2NaOH (aq) → 2NaAlO2 (aq) + H2O (l)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Contoh reaksi oksidasi adalah . . .
A. Ag+ (aq) berubah menjadi Ag (s)
B. Cl2 (g) berubah menjadi Cl‾ (aq)
C. I– (aq) berubah menjadi I2 (s)
D. Cr6+ berubah menjadi CrO4¯²
E. H2O (l) berubah menjadi OH‾ (aq)
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Persamaan reaksi berikut :
Mempunyai harga a, b, c, d berturut-turut . . .
A. 14, 6, 2, 7
B. 6, 14, 2, 7
C. 6, 14, 1, 7
D. 2, 2, 5, 3
E. 3, 5, 1, 2
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Unsur yang dapat menunjukkan bilangan oksidasi paling positif dalam senyawa adalah . . . .
A. Oksigen
B. Belerang
C. Nitrogen
D. Klorin
E. Karbon
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Banyaknya Fe+² yang dapat dioksidasi oleh 1 mol Cr2O7²‾ menjadi Fe+³ adalah . . . .
A. 2 mol
B. 4 mol
C. 5 mol
D. 6 mol
E. 7 mol
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