Logam alumunium dioksida oleh oksigen membentuk aluminium oksida, persamaan reaksi yang benar adalah ….
SUMATIF AKHIR SEMESTER OLIMPIADE KIMIA (PAKET 6)

Quiz
•
Chemistry
•
10th Grade
•
Medium
laila maghfiroh
Used 1+ times
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25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
A. 4Al + 3O2 → 2Al2O3
B. 4Al → 3O2 + 2Al2O3
C. 4Al2O3 → 3Al + 2O2
D. 4Al2O3 + 3O2 → 2Al
E. 4Al + 3O2 → 2AlO3
2.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Senyawa tembaga (II) oksida memiliki rumus kimia .....
A. CuO
B. Cu2O
C. CuO2
D. Cu2O2
E. Cu2O3
3.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Perhatikan persamaan reaksi berikut!
1). PbO2 → Pb2+
2). C2O42- → 2CO2
3). MnO4 → MnO2
4). Cl2 → 2ClO3
Contoh reaksi reduksi terdapat pada angka .....
A. 1) dan 2)
B. 1) dan 3)
C. 2) dan 3)
D. 2) dan 4)
E. 3) dan 4)
4.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Diketahui persamaan kimia sebagai berikut.
pCS2(g) + qO2(g) → rCO2(g) + sSO2(g)
Nilai p, q, r, dan s berturut-turut adalah .....
A. 1, 2, 1, dan 2
B. 1, 3, 1, dan 2
C. 1, 1, 1, dan 1
D. 1, 3, 2, dan 1
E. 2, 5, 2, dan 3
5.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Nama yang benar untuk senyawa Fe2(SO4)3 adalah .....
A. besi sulfide
B. besi sulfide
C. besi (III) sulfat
D. besi (II) sulfat
E. besi sulfat
6.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Apabila ion Mg+2 bertemu dengan ion Cl-; maka akan terbentuk senyawa dengan rumus .....
A. MgCl
B. Mg2Cl
C. MgCl2
D. Mg3Cl2
E. Mg2Cl3
7.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Nama senyawa dengan rumus kimia Li2O adalah .....
A. Dilitium monoksida
B. Dilitium dioksida
C. Litium oksida
D. Litium (I) oksida
E. Litium (II) oksida
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