SUMATIF AKHIR SEMESTER OLIMPIADE KIMIA (PAKET 8)
Quiz
•
Chemistry
•
10th Grade
•
Medium
laila maghfiroh
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25 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Bilangan oksidasi atom Cl tertinggi di antara senyawa berikut adalah …
A. KCl
B. KClO
C. KClO3
D. CaO2
E. Cl2
2.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Reaksi berikut termasuk reaksi oksidasi jika dilihat dari kemampuan menerima atau melepaskan oksigen adalah ..
A. 2Na2O → 4Na + O2
B. 2K + O2 → 2K2O
C. 2BaO2 → 2BaO + O2
D. 2Na2O2 → 2Na2O + O2
E. 2Na2O → 4Na
3.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Bilangan Oksidasi Fe dalam Fe O adalah...
A. +2
B. 0
C. +1
D. +3
E. -2
4.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Bilangan oksidasi N dalam HNO3 adalah …
A. +5
B. -2
C. +2
D. +3
E. 0
5.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Pada reaksi CuO + H2 -> Cu + H2O, hasil oksidasi adalah
A. H2O
B. H2
C. CuO
D. Cu
E. OH
6.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Hasil reduksi pada reaksi Cl2 + H2O à HCl + HOCl adalah
A. Cl2
B. HCl
C. HOCl
D. H2O
E. OH
7.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
Tentukan bilangan oksidasi klorin dalam Cl2O7 ...
A. -1
B. +7
C. -7
D. +1
E. 0
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