P2 (SelVolta+Deret Volta+Elektrolisis+Korosi

Quiz
•
12th Grade
•
Medium
Nugroho Putra
Used 127+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui data potensial reduksi standar :
Zn2+ + 2e → Zn Eo = -0,76 V
Mg2+ + 2e → Mg Eo = -2,38 V
Cu2+ + 2e → Cu Eo = +0,34 V
Notasi sel yang dapat berlangsung spontan adalah....
Fe |Fe2+ ||Zn2+ |Zn
Zn |Zn2+ ||Mg2+ |Mg
Cu |Cu2+ ||Zn2+ |Zn
Cu |Cu2+ ||Fe2+ |Fe
Mg |Mg2+ ||Cu2+ |Cu
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika diketahui :
Zn+2 / Zn Eo = –0, 76 Volt
Cu+2 / Cu Eo = +0,34 Volt
Maka besarnya potensial sel (Eo sel) Volta tersebut adalah ...
–0,42 Volt
–1,10 Volt
+0,42 Volt
+1,10 Volt
+11,0 Volt
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui data :
E0 Mg 2+/Mg = - 2,37 Volt
E0 Cu 2+/Cu = + 0,34 Volt
E0 Ag +/Ag = + 0,80 Volt
E0 Fe 2+/Fe = - 0,44 Volt
E0 Pb 2+/Pb = - 0,13 Volt
Sel Volta yang menghasilkan listrik dengan potensial sel standar terbesar adalah ....
Mg + Pb2+→ Mg2+ + Pb
Mg + 2 Ag+ → Mg2+ + 2 Ag
Mg + Cu2+→ Mg2+ + Cu
Pb + Cu2+ → Pb2+ + Cu
Fe + 2 Ag + → Fe2+ + 2 Ag
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dalam suatu sel volta terjadi reaksi:
Cu + 2Ag+ ---> Cu2+ + 2Ag.
Jika diketahui:
E0 Cu2+/Cu = +0,34 volt
E0 Ag+/Ag = +0,80 volt,
maka potensial standar sel tersebut adalah…
1,74 volt
0,66 volt
0,53 volt
0,46 volt
0,94 volt
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Logam Y dapat mendesak logam Z dari larutannya, logam X dapat mendesak logam Z dari larutannya, sedangkan logam X tidak dapat mendesak logam Y dari larutannya. Urutan potensial reduksi yang makin negatif adalah....
Y-X-Z
Z-X-Y
Z-Y-X
X-Z-Y
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada elektrolisis larutan tembaga(II) sulfat dengan elektrode besi di katode, dan di anode elektrode tembaga, di katode setelah elektrolisis akan terjadi .....
Endapan tembaga
Gas hidrogen
Gas oksigen
Gas klorin
ion OH-
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Kuat arus listrik sebesar 10 ampere dipakai untuk melapisi logam seng dengan 0,59 gram tembaga yang berasal dari larutan tembaga sulfat (Ar Cu = 63,5). Waktu yang diperlukan untuk melapisi logam seng itu adalah ...
0,5 jam
0,25 jam
0,025 jam
0,05 jam
0,005 jam
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