
ELEKTROKIMIA
Quiz
•
Chemistry
•
12th Grade
•
Medium
MOHAMMAD HARIYANTO, S. Pd., M. Si.
Used 3+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Dengan melihat table potensial elektroda standar,
Eo Cu2+/Cu = +0,34 V
Eo Fe3+/Fe2+ = +0,77 V
apakah reaksi di bawah ini dapat berlangsung spontan
Fe2+ + Cu2+ --> Fe3+ + Cu
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Zn2+ + 2e → Zn E0 = -0,76 V
Al3+ + 3e → Al E0 = +1,66V
Maka reaksi ydi bawah ini berlangsung spontan atau tidak ?
Al + Zn2+ --> Al3+ + Zn
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Mg2+ (aq) + 2e → Mg (s) Eo = −2,38 volt
Al3+ (aq) + 3e → Al (s) Eo = −1,66 volt
Notasi sel reaksi yang dapat berlangsung adalah....
Mg | Al3+ || Mg2+ | Al
Al | Al3+ || Mg | Mg2+
Mg2+ | Mg || Al | Al3+
Al | Mg2+ || Mg | Al3+
Mg | Mg2+ || Al3+ | Al
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Jika diketahui :
Mg + 2Ag+ → Mg2+ + 2Ag E0 = +3,12 V
Ag+ + e → Ag E0 = +0,80 V
Cu2+ + 2e → Cu E0 = +0,34 V
Mg + Cu2+ → Mg2++Cu
Maka potensial standar untuk reaksi di atas adalah
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Diketahui potensial elektrode perak dan tembaga:
Ag+ + e → Ag E0 = + 0,80 V
Cu2+ + 2 e → Cu E0 = + 0,34V
Maka reaksi selnya adalah…
2Ag+ + Cu → 2Ag + Cu2+
Ag2+ + Cu → 2Ag + Cu2+
Cu + 2Ag+ → Cu2+ + 2Ag
2Ag + Cu → 2Ag+ + Cu2+
Ag + Cu2+ → Ag+ + Cu
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Tiga logam L, M, P dapat membentuk ion-ion positif L2+, M2+, P+. Jika diketahui:
L2+(aq) + P(s) → tidak terjadi reaksi
2P+(aq)+ M(s) → M2+(aq) + 2P(s)
M2+(aq)+ L(s) → M(s) + L2+(aq)
Urutan ketiga logam sesuai dengan potensial elektrode yang meningkat adalah....
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Diketahui harga potensial electrode (E0) berikut:
Cd2+(aq) + 2e- ↔ Cd(s) E0 = -0,40 volt
Zn2+(aq) + 2e- ↔ Zn(s) E0 = -0,76 volt
Ni2+(aq) + 2e- ↔ Ni(s) E0 = -0,23 volt
Urutan daya pengoksidasi (oksidator) mulai dari yang lemah ke yang kuat adalah…
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