SOAL SOAL ELEKTROKIMIA
Quiz
•
Chemistry
•
12th Grade
•
Medium
JUNIARTI DODI S
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20 questions
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1.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Berapakah bilangan oksidasi Cr dalam K2Cr2O7
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Bahan yang digunakan sebagai elektrode pada sel aki (accu) adalah …
Pt dan C
Zn dan C
Pb dan PbO2
Zn dan Cu
Cu dan PbO2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perhatikan reaksi berikut:
Bila kedua logam tersebut dipasangkan untuk membentuk sel volta, maka pernyataan berikut yang tidak benar adalah …
Elektrode Zn teroksidasi dan Elektrode Cu tereduksi
Elektrode Zn Sebagai Anode dan Cu sebagai Katode
Potensial sel yang dihasilkan adalah 1,10 volt
Notasi selnya : Zn(s)|Zn2+(aq)||Cu2+(aq)|Cu E°sel = 1,10 V
Dalam sistem sel volta tersebut elektron bergerak dari Cu menuju Zn
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berikut adalah beberapa elektrode yang dapat dikombinasikan menjadi pasangan sel Volta:
Dari kelima elektrode tersebut yang tidak mungkin menjadi katode adalah elektrode …
Cu
Cd
Co
Mg
Zn
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Faktor faktor yang mempengaruhi terjadinya korosi adalah...
Air
Permukaan logam
Elektrolit
O2
Permukaan kayu
6.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Mg2+ + 2e ........
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Reaksi:
Potensial yang dihasilkan oleh reaksi Mg + NiCl2 → MgCl2 + Ni adalah …
-2,12 volt
+2,12 volt
+1,06 volt
-2,62 volt
+0,80 volt
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