Kimia (Sel Volta/Sel Galvani)
Quiz
•
Chemistry
•
12th Grade
•
Hard
Heny Widyastuti
Used 13+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diketahui :
Ni2+(aq) + 2e → Ni(s) Esel= -0,25 v
Pb2+(aq) + 2e → Pb(s) Esel = -0,13 v
Potensial standar sel volta yang terdiri dari elektroda Ni dan Pb adalah ….
-0,38 v
-0,03 v
+0,12
+0,25 v
+0,38
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diket potensial reduksi:
Mg2+(aq) + 2 e → Mg(s) Esel = -2,37 v
Sn2+(aq) + 2 e → Sn(s) Esel = -0,14 v
Dengan data tersebut disusun sel volta. Pernyataan yang benar adalah...
logam Mg sebagai katoda
reaksi: Sn(s) + Mg2+(aq) → Mg(s) + Sn2+(aq) berlangsung spontan
potensial sel yang terjadi +2,57 volt
logam Sn bertindak sebagai elektrode positif
elektroda Sn larut
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dari gambar tersebut, maka reaksi reduksi dan oksidasi yang terjadi adalah....
Fe(s) + Cu2+(aq) → Fe2+(aq) + Cu(s)
Fe2+(aq) + Cu2+(aq) →Fe(a) + Cu(s)
Cu(s) + Fe2+(aq) → Fe(s) + Cu2+(aq)
Fe(s) + Cu(s) → Fe2+(aq) + Cu2+(aq)
Fe(s) + Fe2+(aq) → Cu(s) + Cu2+(aq)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dari 3 logam X, Y dan Z diketahui Y dapat bereaksi dengan X dan Z, logam Z tidak dapat bereaksi dengan Y akan tetapi dapat bereaksi dengan X. Sedangkan X tdk dapat bereaksi dengan Y dan Z. Urutan ketiga logam dalam deret volta adalah....
Y - Z - X
X - Y - Z
Z - X - Y
Z - Y - X
X - Z - Y
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berdasarkan deret volta, reaksi elektrokimia yang dapat berlangsung secara spontan adalah ….
Sn(s) + Fe2+(aq) → Sn2+(aq) + Fe(s)
Sn2+(aq) + Fe(s) → Sn(s) + Fe2+(aq)
Pb(s) + Zn2+(aq) → Pb2+(aq) + Zn(s)
3Mg2+(aq) + 2Al(s) → 3Mg(s) + 2Al3+(aq)
Pb(s) + 2Ag+(aq) → Pb2+(aq) + 2Ag(s)
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tuliskan notasi sel dari :
Ni2+(aq) + 2e → Ni(s) Esel = -0,26 v
Zn2+(aq) + 2e → Zn(s) Esel = -0,76 v
Ni2+ | Ni || Zn | Zn2+
Zn | Zn2+ || Ni2+ | Ni
Zn2+ | Zn || Ni2+ | Ni
Ni | Ni2+ || Zn2+ | Zn
Zn2+ | Zn || Ni | Ni2+
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dalams el volta, reaksi menggunakan jembatan garam. Apa tujuan dari penggunaan jematan garam tersbut....
hiasan saja
menetralkan jumlah ion yang terjadi akibat reaksi
mentralkan anoda dan katoda
membuat setengah reaksi
jalannya reaksi daria katoda ke anoda
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