Page 16 - UKBM KIMIA X Genap 2021
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KIM.3.9/4.9/2/1.1
e. Bilangan oksidasi hidrogen, diketahui:
Kesimpulannya adalah
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f. Jumlah bilangan oksidasi atom-atom dalam senyawa netral dan jumlah bilangan oksidasi
atom dalam ion poliatom, diketahui:
Kesimpulannya adalah
...............................................................................................................................................................................................
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g. Berdasarkan penentuan bilangan oksidasi yang telah diketahui diatas, tentukanlah bilangan
oksidasi unsur yang digarisbawahi!
(1) HNO3
Jawab: ...............................................................................................................
(2) Ag2O
Jawab: ...............................................................................................................
(3) CuCl2
Jawab: ...............................................................................................................
(4) PO4
3-
Jawab: ...............................................................................................................
(5) CrO4
2-
Jawab: ................................................................................................................
(6) K2Cr2O7
Jawab: ...............................................................................................................
3. Perhatikan kembali reaksi kimia di bawah ini!
a. Berdasarkan keadaan bilangan oksidasinya, apa yang dapat kalian amati dari reaksi di atas?
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b. Berdasarkan reaksi yang kalian amati di atas, jika H 2 mengalami OKSIDASI dan Cl2 mengalami
REDUKSI. Simpulkanlah pengertian reaksi oksidasi dan reduksi berdasarkan perubahan bilangan
oksidasinya.
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