
Soal Kimia Sel Volta
Authored by mislam spd
Chemistry
12th Grade
Used 752+ times

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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diketahui data potensial elektrode standar (Eo) dari logam A dan logam B sebagai berikut
A2+(aq) + 2e– → A(s) Eo = +0,30 volt
B2+(aq) + 2e– → B(s) Eo = -0,40 volt
Jika logam A dan B disusun pada suatu sel volta dengan A dan B sebagai elektrode, maka pernyataan
yang tidak benar adalah….
sebagai katode
sebagai anode
potensial selnya adalah 0,70 volt
reaksinya :B2+ + A → B + A2+
Notasi Volta : B | B2+ || A2+ | A
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jika diketahui:
Al3+ + 3e– → Al Eo = -1,66 volt
Mg2+ + 2e– → Mg Eo = – 2,34 volt
Maka potensial sel untuk reaksi:
Al3+ + Mg → Mg2+ + Al
+0,34 V
-0,34 V
+0,68 V
-0,68 V
+ 1,36 V
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui:
Cu2+ + 2e– → Cu Eo = + 0,34 volt
Mg2+ + 2e– → Mg Eo = -2,34 volt
Zn2+ + 2e– → Zn Eo = -0,76 volt
Al3+ + 3e- → Al Eo = -1,66 volt
Fe2+ + 2e- → Fe Eo = -0,44 volt
Nilai potensial sel yang terbesar terdapat pada…
Cu | Cu2+ || Al3+ | Al
Al | Al3+ || Zn2+ | Zn
Mg | Mg2+ || Cu2+ | Cu
Zn | Zn2+ || Fe2+ | Fe
Fe | Fe3+ || Cu2+ | Cu
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika diketahui:
Ag+ + e– → Ag Eo = +0,80 volt
Cu2+ + 2e– → Cu Eo = +0,34 volt
Mg2+ + 2e– → Mg Eo = -2,34 volt
Zn2+ + 2e– → Zn Eo = -0,76 volt
Al3+ + 3e– → Al Eo = -1,66 volt
2H+ + 2e– → H2 Eo = 0 volt
Maka reaksi yang tidak dapat berlangsung spontan adalah….
Zn + 2H+ → Zn2+ + H2
Mg + Cu2+ → Mg2+ + Cu
3Ag + Al3+ → 3Ag+ + Al
2Al + 6H+ → 2Al3+ + 3H2
Mg + Zn2+ → Mg2+ + Zn
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika diketahui potensial reduksi logam sebagai berikut:
X2+ + 2e– → X Eo = +0,47 volt
Y2+ + 2e– → Y Eo = -0,76 volt
Z2+ + 2e– → Z Eo = -0,83 volt
Susunan logam X, Y, dan Z dalam deret Volta berdasarkan urutan sifat reduktor yang makin kuat adalah….
X-Y-Z
Y-X-Z
Z-Y-X
X-Z-Y
Y-Z-X
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Logam-logam A, B, dan C masing-masing memiliki Eo = -0,5 V ; +0,8 V ; dan -1,2 V. Pernyataan yang benar
adalah…
A dapat mereduksi C, tetapi tidak dapat mereduksi B
B dapat mereduksi C, tetapi tidak dapat mereduksi A
C dapat mereduksi A, tetapi tidak dapat mereduksi B
A dapat mereduksi B dan C
C dapat mereduksi A dan B
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Tiga logam L, M, P dapat membentuk ion-ion positif L2+ , M2+, P+. Diketahui sbb:
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 loga sesuai dengan potensial elektrode yang meningkat ialah....
P, M, L
L, M, P
M, L, P
M, P, L
P, L, M
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