Elektrokimia (volta dan elektrolisis)
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
Kicky Wardani
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20 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika elektrode Zn dipasangkan dengan elektrode Cu menjadi sel volta, pernyataan yang tidak tepat adalah ....
anodenya Zn dan katodenya Cu
di anode, Zn akan larut
E0sel yang terjadi adalah +1,10 V
kutub positifnya adalah elektrode Zn
elektron bergerak dari elektrode Zn ke Cu
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pernyataan yang paling tepat untuk gambar tersebut adalah ....
elektron bergerak dari elektrode tembaga menuju elektrode zink
ion NO3- pada jembatan garam bergerak ke larutan Zn(NO3)2
massa elektrode tembaga bertambah akibat terjadi reduksi ion Cu2+
konsentrasi ion Zn2+ di dalam elektrode berkurang karena mengalami reduksi
arus listrik mengalir dari elektrode zink menuju eletrode tembaga
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berdasarkan data tersebut, pernyataan yang benar adalah ....
reaksi sel : 3Cd2++ 2Cr3+ -> 2Cr + 3Cd
Cd akan bertindak sebagai anode
E0sel sebesar +1,36 V
arus listrik mengalir dari Cr ke Cd
Cr mengalami reduksi
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Logam yang paling kuat daya reduksinya adalah ....
Mg
Ag
Cu
Mn
Cd
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Nilai potensial elektrode standar Pb2+/Pb adalah ....
-3,12 V
-0,13 V
+0,13 V
+2,12 V
+3,12 V
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berdasarkan reaksi tersebut, reaksi yang terjadi di anode dari sel kering (Leclanche) adalah ....
A
B
C
D
E
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Sel volta yang tersusun dari pasangan elektrode Zn dan Pb akan mempunyai harga E0sel sebesar ....
0,36 V
0,63 V
2,03 V
2,66 V
3,13 V
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